ZenBloks
Zen Bloks® XL Gel Seat Cushion – Extra Thick Cooling Comfort for All-Day Sitting
Zen Bloks® XL Gel Seat Cushion — Extra Thick 20" x 20" Comfort Support
Video Overview
Comfort You Can Count On
The Zen Bloks® XL Gel Seat Cushion provides stable, structured comfort for long sitting sessions at home, work or on the road. The 20" x 20" XL surface offers full-seat coverage, and the 2.5-inch extra-thick gel layer pairs cooling airflow with dependable ergonomic support.
The honeycomb gel grid flexes without flattening, while the breathable cover keeps the seat feeling fresh through extended use. This cushion is engineered for users who want firm, consistent support instead of soft or collapsible foam.
Why Choose the XL Gel Seat Cushion
Extra-Large Coverage
Designed for office chairs, trucks, gaming setups and home seating.
Dual-Layer Comfort
Cooling honeycomb gel grid with optional high-density foam topper for balanced, natural support.
Ergonomic Sitting Design
Encourages a balanced posture and even weight distribution during long sessions at a desk, driving or gaming.
Cooling Airflow
Open-cell gel grid circulates air and helps maintain a comfortable seating temperature.
Durable Build
Firm gel resists sagging, and the non-slip base keeps the cushion secure on any chair.
Easy to Clean
Comes with a removable, machine-washable cover for everyday use.
Key Benefits
- Structured gel seat cushion for long sitting
- Encourages a balanced, natural sitting posture
- Even weight distribution for more comfortable sessions
- Cooling honeycomb airflow design
- Firm and stable; never collapses or feels sponge-like
- Lightweight and portable with built-in handles
- Works as a truck driver cushion, office chair upgrade or travel companion
- Built for long-lasting everyday comfort
Product Details
Dimensions: 20" x 20" x 2.5"
Materials: Cooling TPE gel with optional high-density foam topper
Cover: Removable, washable fabric
Color: Slate Gray
Weight: Approx. 3 lbs
Warranty: 1-Year Limited Warranty
Home Trial: 100-Day Trial (View return policy)
FAQs
Q1: How thick is the cushion?
It features a 2.5-inch dual-layer build for stable, long-session support.
Q2: Can it be used in cars or trucks?
Yes, the non-slip base keeps it stable on both leather and fabric seats.
Q3: Is it soft or firm?
It’s firm by design with a flexible gel feel to maintain consistent support.
Q4: How do I clean it?
The cover is machine-washable; the gel core can be wiped with mild soap and water.
Download the user manual here
Care instructions here
Product information
Experience the ZenBloks® Difference
ZenBloks® products are built with high-density, high-quality materials engineered for structure, comfort and long-term durability. Every component—from our extra-thick TPE gel to our premium memory foam—goes through repeated density checks, airflow testing and real-world use simulations to deliver ergonomic comfort that stays consistent day after day.
Extra-Thick TPE Gel (For Gel Seat Cushions)
ZenBloks® TPE (Thermoplastic Elastomer) gel blends flexibility, resilience and cooling airflow in a single material. Our extra-thick gel layer creates a stable sitting surface designed for long sessions at a desk, in a vehicle or at home. The open-grid honeycomb pattern increases ventilation while maintaining a firm, balanced feel.
Benefits of our extra-thick TPE gel cushion design:
- Balanced, even sitting surface: The gel grid adapts to your natural posture to support steady, comfortable sitting.
- High-density durability: Engineered to maintain structure, the gel resists flattening and sagging through daily use.
- Structured firmness: Offers a supportive feel without excess softness, helping promote a consistent upright sitting posture.
- Cooling airflow: The hexagonal honeycomb design enhances ventilation to keep the seating surface comfortable.
- Versatile applications: Works well on office chairs, car seats, trucks, gaming setups and home seating.
High-Density Memory Foam (For Pillows & Leg Elevation Wedge)
ZenBloks® memory foam is a premium, high-density polyurethane foam engineered for structured support and long-lasting performance. Its viscoelastic response allows the foam to gently adapt to your natural shape and return to form after each use, helping create a balanced, stable resting experience.
Key characteristics of ZenBloks® memory foam:
- Adaptive contouring: The foam responds to pressure and warmth, creating a supportive, personalized surface feel.
- Even weight distribution: Helps promote a balanced resting posture by naturally adapting to your shape.
- Steady, slow-response feel: The foam gradually returns to its original structure, providing smooth, stable movement.
- High-density resilience: Engineered to resist compression and maintain shape through repeated daily use.
- Enhanced comfort vs. standard foam: Offers a more adaptive, body-responsive feel than traditional polyurethane foam.
Memory foam and standard polyurethane foam both offer long-term durability, but memory foam provides a more structured, contouring experience while standard foam feels more springy and immediate.
Important Notes
Please note: ZenBloks® products are designed for ergonomic comfort, posture support and everyday use. They are general comfort items and not medical devices.
For guidance on choosing the right product for your daily routine or seating setup, feel free to contact our support team.
ZenBloks Official Policy: Returns, Exchanges & Warranty
Our Commitment to Quality: At ZenBloks, we build premium products designed for lasting comfort and support. This policy is created to be transparent and straightforward, ensuring you have complete confidence in your purchase. Please review these terms carefully.
Contact Information:
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Customer Support Inquiries: Support
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Business Address: 1600 Rosecrans, Ste 400, Manhattan Beach, CA 90266
1. 30-Day Return & Exchange Policy
We offer a 30-day window from the date of delivery for returns and exchanges, subject to the strict conditions outlined below.
1.1 Condition: Unopened & Unused Products
We accept returns and exchanges for products that are in their original, unopened, vacuum-sealed packaging.
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Eligibility: The product must be completely unused, unexpanded, and in perfect, resalable condition.
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Process for Returns & Exchanges: To initiate a return or exchange, please get in touch with our support team with your original order number.
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Refunds: For returns, a full refund of the product's purchase price will be issued to your original payment method within 5-7 business days after the item is received and inspected by our team. The customer is responsible for all return shipping costs.
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Exchanges: For exchanges, the customer is responsible for all shipping costs (both for returning the original item and sending the new one).
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Restocking Fees: We do not charge any restocking fees.
1.2 Condition: Opened or Used Products (Strictly Non-Returnable)
For hygiene and safety reasons, once a product's vacuum seal is broken, it is considered used and is immediately designated as FINAL SALE. It is not eligible for a return, exchange, or refund.
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This is a non-negotiable policy required because our foam products cannot be re-compressed, re-sealed, or resold once expanded.
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This final sale policy covers all instances of personal comfort preference, including but not limited to dissatisfaction with the product's firmness, feel, height, design, or a belief that it "will not suit my needs."
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The only exception to this policy is in the case of a verified manufacturing defect, which is covered exclusively under our Limited Warranty (see Section 2).
1.3 Clarification on Defect Claims vs. Personal Preference
To maintain a fair policy for all customers, any claim of a manufacturing defect must be substantiated with clear, verifiable evidence as required by our Warranty Claim Process (Section 2.4). If a customer reports an opened product as "defective" but fails to provide the required proof of a manufacturing flaw, the claim will be denied.
Our warranty does not cover personal comfort preferences. Issues related to firmness, feel, height, design, or a belief that the product "will not suit my needs" are not considered manufacturing defects. In such cases, the product is not eligible for a return or refund and remains subject to our Final Sale policy for opened items.
2. 10-Year Limited Warranty
ZenBloks products are warranted against manufacturing defects for the original purchaser only. This warranty is non-transferable and is the sole and exclusive warranty offered.
2.1 Warranty Coverage Period
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10-Year Limited Warranty | Foam Core: The foam core is warranted against manufacturing defects for a period of ten (10) years from the original date of purchase.
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1-Year Limited Warranty | Fabric Cover: The fabric cover is warranted against manufacturing defects for a period of one (1) year from the original date of purchase.
2.2 What This Limited Warranty Covers
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Foam Core (10 Years): Manufacturing defects that result in visible cracking, splitting, or deterioration of the foam under conditions of normal use. It also covers a visible indentation or loss of resilience greater than one (1) inch that is not the result of normal, expected softening from use.
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Fabric Cover (1-Year): Physical flaws in the fabric or zipper caused by a manufacturing error, such as defective seams or a faulty zipper mechanism under normal use.
2.3 What This Limited Warranty Does NOT Cover
This warranty is strictly limited to defects in materials and workmanship. It explicitly excludes:
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Personal Comfort Preference: A customer's subjective opinion on the product's performance or attributes.
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Normal Wear and Tear: The natural and expected softening of the foam over time, or cosmetic changes to the fabric such as pilling or fading from regular use.
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Physical Damage or Misuse: Any damage caused by accidents, abuse, or improper care, including but not limited to: stains, spills, burns, cuts, liquid damage, or pet damage.
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Improper Care: Damage from failure to follow care instructions, such as attempting to wash the foam core.
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Unauthorized Sellers: Any product sold by an unauthorized retailer or any product sold "as-is," "used," or "refurbished."
2.4 The Warranty Claim Process
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Contact Support: To initiate a claim, email our support team.
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Provide Proof of Purchase: You must provide your original ZenBloks.com order number.
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Submit Visual Evidence: We require clear photographs and/or a short video that unambiguously demonstrates the alleged manufacturing defect. This is mandatory for claim assessment.
ZenBloks reserves the sole right and discretion to determine if a claim is valid. If a manufacturing defect is confirmed, we will, at our discretion, repair or replace the defective product or component. If we require the defective item to be returned for analysis, ZenBloks will provide a prepaid shipping label.
Patents
Zen Bloks is a registered Trademark of the USPTO. Our Leg Elevation Wedge is protected by multiple patents and design registrations, including:
Design
- United States Design US D1056218
- Taiwan Design: D231844
- German Design: 402023100595-0001
Utility
- Taiwan Utility: M651917
- German Utility: 20 2023 105 940
- China Utility: ZL 2023 2 2759940.6
- United States Approved Awaiting Patent Number
Please note: Additional patents are pending. All rights reserved.
Keeping Your Cushion Clean
Cleaning Your Gel Seat Cushion
Clean your ZenBloks® gel seat cushion using warm water (not hot) and a small amount of gentle dish soap. Rinse lightly and allow the cushion to air-dry completely before use. Each cushion includes a protective inner cover designed to maintain structure and durability over time.
Avoid direct sunlight or leaving the cushion inside a hot vehicle. Temperatures above 104°F (40°C) can affect the gel material. If the cushion becomes warm, allow it to cool indoors for approximately 30 minutes before sitting on it again.
Helpful Tips for Enjoying Your Cushion & Leg Wedge Pillow
Unpacking Your Pillow
ZenBloks® pillows and leg elevation wedges are shipped carefully compressed to protect the foam and fabric from humidity and temperature changes during transit.
Open the plastic wrap gently. The pillow or wedge will expand to full shape within a few hours (up to 24 hours depending on the climate). Do not wash the foam core. Water can damage high-density foam materials.
About Our Foam
ZenBloks® memory foam is a premium, odor-neutralized polyurethane foam crafted for structured, long-lasting comfort. In the rare event, a mild scent may be present when unpacked. This is normal and temporary.
Legal Disclaimer
ZenBloks® products are designed for comfort, posture support, and everyday ergonomic use. They are not medical devices and are not intended for diagnosis, treatment, or prevention of any condition.
If you plan to include any ZenBloks® product as part of a recovery or wellness routine, please consult a licensed healthcare professional for personalized guidance.
By purchasing or using ZenBloks® products (including leg wedges, gel seat cushions, and memory foam pillows), you acknowledge and agree to the following:
• ZenBloks® and its affiliates are not responsible for injuries, damages or adverse effects resulting from use or misuse of the product.
• Users are responsible for determining whether a product is suitable for their personal needs or seating setup.
• ZenBloks® products are not intended to diagnose, treat, cure, or prevent any medical condition.
• Users agree to hold harmless and indemnify ZenBloks® and its affiliates against any claims related to product use.
For questions about proper use, care, or safety, please contact our support team before using your ZenBloks® product.
