Best Choice Adjustable Zero Gravity Lounge Chairs
Durable steel mesh for long-lasting use.
Adjustable recline offers personalized comfort.
Convenient cup holder trays included.
We compared the top Beach Chairs products so you can quickly spot the strongest options for value, features, and everyday performance.
Durable steel mesh for long-lasting use.
Adjustable recline offers personalized comfort.
Convenient cup holder trays included.
Smooth rocking motion enhances outdoor relaxation.
Sturdy build ensures long-lasting comfort.
Convenient drink holder for easy access.
Supports lumbar with padded backrest.
Comes with side pockets, cooler bag.
Durable, portable, and easy to fold.
Versatile 3-in-1 reclining design.
Durable and portable for easy transport.
Comfortable headrest with face opening feature.
Extra wide seats for added comfort.
Lightweight and easy to carry.
High back design supports posture.
Lightweight and easy to transport.
Convenient cup holder included.
Durable design for various outdoor settings.
Adjustable canopy offers excellent sun protection.
Convenient backpack straps for easy carrying.
Durable and comfortable seating design.
Lightweight design with convenient backpack straps.
Supports up to 400 lbs, ensuring durability.
Reclines fully for maximum comfort and relaxation.
Adjustable to five comfortable reclining positions.
Includes backpack straps for easy carrying.
Comes with a cooler bag and cup holder.
Comfortable wooden armrests and headrest.
Lightweight and easy to carry.
Durable design supports up to 350 lbs.
Beach chairs vary widely, from simple low sling seats to reclining loungers, rocking chairs, canopy chairs, and zero-gravity models. Their primary function is to support an adult outdoors, and depending on the design, they may also offer features like carrying handles, storage, shade, or multiple seating positions. However, ensuring a chair’s safety and suitability involves more than just checking weight capacity or appealing photos.
Start with fit and intended use:
- Assess the seat height to ensure you can comfortably sit down and stand up, especially with low chairs (approximately 7–12 inches high).
- Verify the dimensions when the chair is open and folded.
- Consider the ground surface compatibility, whether for firm level ground, sand, or residential use.
- Check the weight of the chair and how it is carried.
- Confirm if the chair is designed for outdoor use or specific environments.
- For reclining models, understand how the stops or locks function.
- Folding chairs should be fully opened before use.
- Be aware that published weight capacities (e.g., 250, 300, 330, 350, 400, or 450 pounds) do not necessarily guarantee performance; some listings show conflicting capacities, such as 225 vs. 300 pounds or 300 vs. 500 pounds.
Look for verified structural safety:
- The most reliable evidence is a current pass/fail report from an ISO/IEC 17025-accredited laboratory for the exact model.
- Relevant testing standards include ANSI/BIFMA X5.4-2020(R2025), EN 581-2, ASTM F1858 (plastic multipositional chairs), or ASTM F1988 (plastic adjustable chaise lounges).
- An official test report should specify the model, revision, laboratory, testing method, date, sample details, limits, and results.
- General manufacturer claims, retailer descriptions, manuals, or brand statements regarding testing are not sufficient proof.
- Verify the laboratory’s accreditation through directories such as ANAB, A2LA, or IAS. Claims of UL or Intertek certification should also be traceable in these directories.
Assess safety for typical use:
- The chair must resist collapsing or tipping forward, backward, and sideways in all advertised positions.
- Components like recline stops, knobs, hinges, elastic cords, support bars, and folding joints should remain secure and not pose pinch or entrapment hazards.
- An instruction manual is helpful but does not replace mechanical testing specific to the model.
- Distinguish between physical shading and tested sun protection: canopy fabrics or UPF claims should be backed by testing (e.g., AATCC TM183) and labeled according to standards like ASTM D6603.
Evaluate outdoor durability:
- Terms like “rust-resistant,” “weatherproof,” or “UV-resistant” are often overstated.
- Look for evidence derived from relevant testing methods such as ASTM G154 (UV resistance) and ASTM B117 (salt spray corrosion).
- Follow storage instructions carefully; many reviews warn against leaving chairs outdoors in rain, salt air, or prolonged sun exposure.
Consider materials and chemicals:
- Specificity in material descriptions is more useful than vague terms.
- A detailed chemical report for coatings, dyes, foam, plasticizers, or metal finishes is necessary for understanding chemical safety and environmental impact.
- A Prop 65 warning should specify the chemical and exposure.
- Replacing worn parts like hinges, joints, or fabric can extend the chair’s lifespan.
- Claims of recycled content or recyclability should be specific and backed by evidence, rather than broad or vague environmental language.
Important safety notes from reviews:
- No model has verified, model-specific, accredited structural testing publicly available.
- Low seats can make standing difficult.
- Moving mechanisms require care, especially around children.
- Some chairs have conflicting capacity ratings.
- Outdoor exposure to salt, rain, or prolonged sunlight without proper evidence can lead to deterioration.
- Specific issues noted include early rusting and lead warnings.
- These chairs are not suitable as medical support devices, child safety seats, climbing equipment, or safety-critical seating without stronger certification.
In summary, carefully review verified safety testing, appropriate materials, and outdoor durability before making a purchase. Avoid assuming outdoor performance without supporting evidence, and consider the safety implications of design features and chemical composition.
The provided evaluations highlight a category where practical features are typically documented more thoroughly than long-term safety, chemical properties, or environmental performance. The scores below are relative indicators based on the reviewed products; they do not represent certifications. Higher scores suggest more comprehensive evidence or transparency, whereas lower scores point to significant information gaps.
This evaluates the resistance of the frame, joints, fabric, lock, and legs to failure, as well as the chair's stability against forward, backward, and sideways tipping in all advertised positions. This is important because low beach chairs and recliners can shift when users sit down, recline, or stand up. The provided scores ranged from 62 to 74; chairs with higher scores typically featured clearer instructions for use or more robust, well-documented safety features. However, none of these chairs had a publicly available, model-specific safety certification or accredited safety report.
This assessment evaluates the security and safety of recline stops, locks, hinges, and folding joints, ensuring they securely hold positions and minimize risks such as pinching, shearing, lacerations, or entrapment. It is particularly important for multi-position loungers, zero-gravity chairs, and folding beach seats. Scores ranged from 68 to 77, with higher scores indicating clearer adjustment instructions or warnings. Conversely, lower scores signified exposed moving parts lacking independent evidence of lock durability or pinch protection.
This evaluates the durability of frames, fasteners, fabrics, coatings, and locks after outdoor exposure. Using products at the beach introduces salt, sand, moisture, and intense sunlight, and multiple reviews advised against leaving chairs outside. Scores ranged from 52 to 72. Products with higher scores generally provided more helpful maintenance tips or material details, but none offered specific public data on UV-aging, salt-spray, or corrosion tests for their exact models.
This assesses whether a canopy or UPF claim was independently verified through testing on the actual fabric under appropriate conditions. While a canopy can offer physical shade, it does not necessarily guarantee UV protection unless specifically tested. Scores typically range from 70 to 80, with higher scores usually indicating either a particular canopy model or a limited lack of UV protection claims. The reviews provided did not find an official fabric report that certifies any claimed UPF feature for the product.
This assessment evaluates transparency and reliable testing for textiles, foam, plastics, coatings, finishes, and other materials that come into contact with the skin, including specific warnings required in California. It is important because beach chairs are made from a combination of synthetic fabrics, metal finishes, padding, plastic fittings, and sometimes elastic parts. The scores ranged from 48 to 76, with higher scores attributed to clearer information about materials or warnings. None of the products provided a comprehensive chemical report for the finished item.
This assessment evaluates the expected service lifespan, availability of replacement parts, repair guidance, the separability of metal, textile, and plastic components, proof of recycled content, and credible end-of-life claims. The availability of repair support was a significant factor: some chairs provided replacement hinges, joints, rails, fabric, or spare parts, whereas others offered no parts support. Scores ranged from 62 to 79. None of the products included verified recycled content or a comprehensive recovery program.
This assesses whether the specific chair has an up-to-date pass/fail report from an ISO/IEC 17025-accredited laboratory, verifying its specified load capacity, structural integrity, durability, and stability. This is a crucial difference between merely advertising a certain capacity and providing proven performance data. While scores ranged from 68 to 72, reviews consistently indicated that no publicly available, exact-model accredited report could be found. Therefore, even the higher scores do not constitute official certification.
This assesses whether a report or certificate specifies details such as the exact model, revision, laboratory, testing method, date, samples, limits, and results, enabling a buyer to verify its authenticity. Simply claiming that a brand tests its products is insufficient. The scores assigned ranged from 68 to 70, indicating minor variations in documentation quality. However, no product had a publicly accessible, fully traceable certificate that covered the specific chair actually sold.
This assesses whether the capacity, dimensions, positions, materials, weather resistance, ergonomic language, and origin claims are specific and backed by appropriate documentation. The importance of this lies in the fact that several products provided had inconsistent capacities or dimensions across different listings. Scores ranged from 50 to 76, with higher scores indicating clearer specifications and more restrained language, while lower scores pointed to contradictions or vague performance claims that lacked independent verification.
This assessment covers unresolved recalls or credible injury reports, along with identifiable importer details, safety contacts, instructions, and remedy procedures. The scores ranged from 70 to 78. Some products provided accessible support, warranties, manuals, or importer information, while others offered less transparency and accountability. Although searches did not reveal any specific product recalls for the items reviewed, it is important to note that the absence of a recall record does not necessarily indicate structural safety.
The primary health disclosure is important. The model-specific manual includes a California Proposition 65 warning regarding lead and lead compounds, indicating potential risks of cancer and reproductive harm. While the warning specifies the chemicals involved, it does not detail the component, exposure route, concentration, or testing method. Additionally, no third-party chemical analysis, low-emission certification, or independent safety certification for the finished chair was found. The chair features a steel frame and synthetic Textilene sling fabric. The steel may be recyclable where local metal recycling facilities accept it, but there is no evidence of recycled content, recyclability, or a take-back program for this product. The manual recommends stopping use of damaged or worn chairs and mentions factory replacement parts, which could help prolong its lifespan. However, it does not specify which parts are available or how long support will be provided. A search through CPSC recall databases and the public unsafe-product reporting portal did not reveal any recalls related to this model.
This set is ideal for adults looking for two portable recliners for occasional use on patios, campsites, beaches, parks, or sports events. It is best suited for users weighing up to the manufacturer’s recommended limit of 250 pounds, who can operate the side-locking knobs, inspect the frame and elastic supports before use, and set the chairs on stable, flat surfaces. Featuring a two-chair layout, folding design, headrests, and removable trays for drinks and devices, it offers convenient outdoor seating for households seeking an easy, no-assembly solution.
This product may not be suitable for individuals who require independently verified performance in areas such as load capacity, tip-over resistance, corrosion resistance, or recline-lock functionality. It is not recommended for users with limited balance, mobility, or difficulty rising from a low reclined position. Avoid using it as a step, on uneven or slippery surfaces, near open flames, or if any fabric, cord, frame, hinge, or lock has been damaged. For households seeking a lead-free material declaration, documented low-emission testing, or easily available long-term replacement parts, it is advisable to select a product that provides such evidence.
The product does not feature a canopy or carry a UPF protection claim, so its sun-protection performance cannot be verified. Independent retail specifications indicate that it has a steel frame, polyester textile, and a powder-coated finish; however, public disclosure of the materials remains limited. No current, product-specific certified chemical testing reports have been identified for the finished textile, foam, coating, or metal finish. Additionally, no product-specific California exposure warning was found during this review. GCI provides a three-year limited warranty covering manufacturing and material defects, which can help extend the product’s lifespan. However, the warranty does not cover fading, rust, moisture damage, or normal wear and tear. Owners are advised to store the product indoors when not in use. The brand offers only a limited selection of replacement parts, limiting repair options. A recall in 2014 by CPSC involved a different GCI stadium-seat product, not this rocker, following a backrest failure. No recalls specific to this product were identified.
This chair is designed for a single adult seeking a compact, foldable rocker suitable for car camping, tailgating, sideline activities, patios, or leveled outdoor surfaces like the beach. It is best suited for users weighing up to the manufacturer’s stated limit of 250 pounds, who can carry the lightweight 11-pound chair. Key features include a raised 17.5-inch seat height, armrests, a built-in beverage holder, and a back panel designed to enhance airflow. It is ideal for those willing to store the chair indoors between uses and to follow the three-year warranty process if a manufacturing defect occurs.
This product is not recommended for users exceeding the specified 250-pound weight limit, households requiring independently verified structural testing, or individuals seeking reliable performance on unstable slopes, loose sand, wet ground, or uneven terrain. Additionally, it is not suitable for those expecting year-round outdoor storage, resistance to salt air, or a weatherproof warranty, as GCI explicitly states that prolonged sun and outdoor exposure can cause material deterioration. If you need easily accessible replacement fabric, frame, or mechanical parts, consider choosing a product with a more extensive parts support program.
The product's basic construction is described as steel combined with Oxford cloth, while VEVOR specifies using 600D rip-stop Oxford fabric along with cotton padding. The public product page does not include a chemical test report for the finished product, nor does it disclose details about coatings and dyes, and there is no California Proposition 65 warning for this chair. While the absence of this information does not necessarily indicate a safety risk, it leaves questions regarding skin contact and household exposure unanswered. Additionally, no publicly available UV, salt-spray, or corrosion testing reports were found for this chair, so claims about rust resistance and outdoor durability are based on the manufacturer’s assertions. The care instructions indicate spot cleaning only, air drying, and avoiding bleach. Although the chair features a mixed steel and textile construction, information about replacement textiles, frame parts, repair instructions, recycled content certification, or material recycling guidance could not be found. A recall by the CPSC in 2026 involved VEVOR baby loungers, not this particular chair. The chair's label provides contact information for a U.S. importer.
This package is designed for adults seeking two spacious, upright camp chairs ideal for car trips, patios, fishing locations, tailgating, or events by the field. It is especially suitable for those who prioritize a wide seat, tall backrest, padded contact surfaces, and on-chair storage for drinks and small items. With a combined weight of approximately 21.1 pounds and a folded size of 39 by 10 inches, it is better suited for transport by vehicle and occasional setup rather than for carrying over long distances away from a parking area. Users should consider the specified 450-pound weight limit as unverified.
This product is not appropriate for buyers requiring documented safety validation for high weight capacity, frequent commercial applications, or environments where failure could result in serious injury. Select an alternative product if independent verification of load capacity, stability, fatigue resistance, corrosion resistance, or pinch-point testing is necessary. Additionally, it is not suitable for activities such as backpacking, walking on soft sand at the beach, or other situations that involve carrying a bulky two-chair set over long distances. Households seeking detailed chemical disclosures, replacement parts, or verified recycled material content will not find such records available for this product.
The manufacturer describes the main construction of the product as an aluminum frame combined with 600D polyester fabric and bamboo armrests. A separate retailer indicates that there is no California Proposition 65 warning associated with this product. While this disclosure is helpful, it does not substitute for an accredited chemical testing report on the finished product. No third-party testing data was found for coatings, fabric treatments, foam, metal finishes, UV protection, or corrosion resistance. The brand offers a practical repair solution by selling replacement parts such as plastic hinges, rails, joints, armrests, end caps, hardware, and replacement footrest fabric for this chair line. This approach can help reduce waste in case of localized damage. However, there is no evidence of recycled materials, recyclability, or environmental certifications for the product. The manufacturer advises owners to dry and store the chairs in a protected area, and its warranty does not cover rust, mold, or weather-related damage. A search for any relevant CPSC recalls or safety warnings yielded no results. Deltess provides clear warranty contact information and a process for addressing issues.
This product is ideal for adults seeking a portable, low-sitting lounger for occasional use at the beach, poolside, campground, or patio. It is especially suitable for those who appreciate a face opening for reading or lying face down. Additionally, it is better suited for an active owner who can dry the frame, store it in a dry location, prevent sand from entering the moving joints, and utilize replacement parts if necessary. The specified 275-pound weight capacity and 12-inch seat height are important size guidelines, but they do not represent independently verified performance metrics.
This product is not suitable for individuals requiring independently verified stability, load capacity, corrosion resistance, chemical resistance, or pinch safety testing, such as commercial operators or buyers with stringent institutional procurement standards. It should be avoided for unattended outdoor storage over extended periods, exposure to salt air without thorough cleaning and drying, or rough handling beyond what is suitable for a single seated person. Individuals with limited balance, difficulty lowering themselves onto a 12-inch seat, or challenges managing folding joints should consider seating options with a higher seat height and better-documented locking and stability features.
No product-specific recall or safety warning was found in the CPSC recall resources for KingCamp chairs. KingCamp offers a accessible warranty contact and clearly outlined remedy process. While this provides valuable accountability information, it does not substitute for independent safety testing. As the product is a folding chair with movable frame joints, users should fully unfold the chair, keep fingers clear during folding, and inspect the fabric, tubes, fasteners, and feet before use. The chair is constructed from polyester Oxford fabric, mesh, steel tubing, and includes a coated carry bag. No specific chemical test reports, recycled-content certifications, or end-of-life disposal claims for this exact product were identified. Since polyester and coated textiles are not easily recyclable through standard household methods, proper disposal may be challenging. KingCamp’s warranty states that outdoor armchairs are covered for 12 months and that spare parts may be available for product issues, supporting repair instead of disposal.
This product is ideal for adults looking for lightweight, portable seating options for the beach, picnics, camping, outdoor concerts, or backyard gatherings. It is particularly suitable for those comfortable sitting down on a 9.4-inch high seat and carrying the chair in its accompanying bag when folded. Features such as a high back, generously sized seat, mesh panels, built-in cup holder, and small-item storage make it convenient for casual daytime activities. Buyers should note that the 300-pound weight limit is provided by the manufacturer and has not been independently tested or verified.
This product is not ideal for individuals with knee, hip, balance, or mobility issues who may struggle to get in and out of a low seat. It is also unsuitable for those requiring independently tested safety features such as load capacity, stability against tipping, folding joint safety, or pinch-point protection—particularly organizations purchasing for public or supervised environments. Additionally, it should not be relied upon for permanent outdoor storage, frequent exposure to salt air, or demanding wet-weather conditions, as there are no specific weather resistance or corrosion test results available. The product does not include a shade canopy and lacks a verified UV protection claim.
The product information available indicates that it has a steel frame and ripstop anti-slip nylon fabric. However, it does not include a chemical test report for the finished product, details about coating chemistry, or a specific California exposure warning. The catalog also mentions mesh and foam components, but the retailer does not clearly specify where the foam is used. This lack of clarity makes it difficult to accurately assess skin-contact materials and potential chemical exposure. No recalls specific to this model were identified in the CPSC recall records. However, this does not guarantee the product's safety testing or compliance. There are no publicly available reports on structural integrity, pinch points, UV resistance, salt-spray, or corrosion. Additionally, there are no available details about replacement parts, repair instructions, recycled-content certification, or reliable claims regarding recyclability. Since the product is likely constructed from steel and synthetic textiles, recycling may be challenging if the fabric is permanently fixed to the frame.
This product is ideal for adults looking for a lightweight, portable seat suitable for sand, lawns, festival venues, or brief camping stops—especially in situations where a standard high camp chair might obstruct someone’s view. Its two-chair design makes it convenient for paired use, and the included carry bags are designed for car trips and short walks from the parking area. It is best suited for users who can comfortably sit down and stand up from a 7-inch-high seat and who consider the 300-pound weight limit as a manufacturer-stated capacity rather than an absolute guarantee.
This product is not ideal for individuals with limited knee, hip, balance, or mobility function, as the seat is only 7 inches from the ground, making it difficult to get up. It is also not suitable for buyers who require certified structural testing, confirmed corrosion resistance for frequent saltwater use, or a canopy with specified sun protection. Do not use it as a recliner, a support chair for extended periods, or for users exceeding the stated 300-pound weight limit, as there is no publicly available testing evidence to support safety in these uses.
The chair features a frame made of steel and aluminum, with polyester textile components. GCI states that its products are labeled in accordance with California Proposition 65; however, no specific chemical disclosures or public chemical test reports for the finished product were found for this chair. The UPF 50 protection claim for the canopy is listed in GCI catalog materials and retailer listings, but no independent public testing documentation verifying this claim for the canopy fabric was available. GCI recommends storing the chair indoors, as exposure to prolonged sunlight, rain, and moisture can cause fabric deterioration and steel components to rust. This is especially important after beach use, where the company recommends rinsing the chair with fresh water and allowing it to dry thoroughly before storage. The brand offers a three-year limited warranty and a claims process; however, replacement parts are limited, and coverage does not extend to fading, rust, moisture damage, or certain wearable accessories. Additionally, a 2014 CPSC recall involved a different GCI stadium-seat product, not this particular beach chair.
This chair is ideal for adults attending the beach, picnics, sidelines, or outdoor events who prefer a low seating position, a design that can be carried on the back, and customizable shade. It is best suited for fair-weather days, with quick drying and indoor storage afterward. The maximum weight capacity of 250 pounds indicates it is suitable for users within that limit. Additionally, it appeals to those who prioritize a four-position adjustable backrest and a storage pocket over extreme compactness or ultralight features.
This product is not suitable for individuals exceeding the specified 250-pound weight limit, those who require independently verified structural or tip-over testing, or households looking for a chair with clearly documented pinch-point safety evaluations. It is also not ideal for long-term outdoor storage on patios, exposure to salty air without proper rinsing and drying, heavy rainfall, or frequent use in wet conditions. Customers expecting simple replacement of worn straps, fabric, cupholders, or parts prone to corrosion should consider a product with a more extensive parts replacement program.
This product does not offer canopy shade, UPF protection, or UV-blocking features and should not be considered a form of sun protection. The product details mention aluminum and 600D Oxford fabric but lack a chemical test report for the finished product, as well as detailed information on coatings, dyes, water repellents, metal finishes, or skin-contact substances. Additionally, there was no California Proposition 65 warning observed on the listing. A review of CPSC recall records and the SaferProducts public search portal revealed no recall notices or reported incidents related to this product or the #WEJOY brand. However, this absence does not guarantee safety. Notably, the product’s promotional claim of supporting a 400 lb weight limit conflicts with its safety notice stating a maximum of 265 lbs, and no testing records were found to clarify this discrepancy. Furthermore, there is no information available on recycling, recycled content, repair options, spare parts, or disassembly, which limits confidence in the product’s durability and potential for material recovery.
This design is ideal for adult beach or lawn users seeking a low seat, a foldable carry method, and multiple reclining options as specified by the manufacturer for occasional daytime relaxation. It may appeal to those who appreciate built-in storage for a drink, phone, towel, or book and can carry the chair using backpack straps. Due to conflicting capacity details on the page, it is best suited for users comfortably under the conservative weight limit of 265 pounds and who will use it on firm, even ground, ensuring that hinges, fabric, feet, and frame are in good condition and undamaged.
This chair is not suitable for those requiring a verified 400 lb weight capacity, frequent high-load use, or documented structural and stability testing. It should be avoided by users weighing near or above 265 lb, as the product page's safety guidelines specify this lower limit. Additionally, it is not ideal for households that need clear instructions to avoid pinch points around folding and reclining joints, or for situations demanding proven durability in saltwater or prolonged sun exposure. It also does not come with replacement parts or an explicit manufacturer’s warranty. Do not use the chair if it is damaged or unstable, on uneven surfaces, or near heat sources and open flames.
The product is described as featuring a metal frame, foam padding, and Textilene mesh. While Textilene is mentioned in retailer listings, there is no available chemical disclosure for the finished product, no specific fabric composition, and no accredited chemical test report. Additionally, no California Proposition 65 warning related to this product was identified in the sources reviewed. Since the product does not claim to provide a canopy or UPF (Ultraviolet Protection Factor), it should not be considered a reliable source of sun protection. Public searches did not reveal any CPSC recalls or incident reports specifically associated with this product or brand. However, this does not guarantee the product’s safety or risk-free performance. No publicly available repair guides, replacement parts, hardware availability, recycled-content certifications, or guidelines for material recovery were found. Although the folding metal frame might be more salvageable than an entirely composite chair, the combination of frame, mesh, foam, and accessories is not documented as easily separable for repair or recycling.
This collection is ideal for two adults looking for lightweight, portable seating for occasional use at the beach, campground, lawn, or outdoor events. It is especially suitable when reclining comfort, a convenient carry-back design, and built-in storage are more important than certified commercial-grade durability. The specified Textilene mesh and folding structure are practical for users who anticipate damp or sandy environments and need chairs that can be easily transported from a vehicle to the location. Buyers should adhere to the recommended weight capacity, as it has not been independently verified.
This product is not ideal for buyers who require documented support for high body weight, frequent heavy use, or use in environments where a collapse could pose serious risks. Individuals with limited balance, mobility challenges, or difficulty getting up from low chairs may need a higher seat with independently verified stability. Households with children should supervise folding and recline adjustments, as there is no publicly available evidence confirming the safety of these features or protection against pinch points. Additionally, it is not well-suited for regular exposure to salt air without corrosion testing evidence.