--- product_id: 647014768 title: "TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray" brand: "tranquilrelax" price: "¥22084" currency: JPY in_stock: true category: "Tranquil Relax" url: https://www.desertcart.jp/products/647014768-tranquilrelax-memory-foam-seat-cushion-for-office-chair-3-inch store_origin: JP region: Japan --- # Non-slip ergonomic curved edge Premium soft foam, year-round pliability 17.7x16.1x3 in large size TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray **Brand:** tranquilrelax **Price:** ¥22084 **Availability:** ✅ In Stock ## Summary > 🪑 Elevate your sit game—comfort that works as hard as you do! ## Quick Answers - **What is this?** TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray by tranquilrelax - **How much does it cost?** ¥22084 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/647014768-tranquilrelax-memory-foam-seat-cushion-for-office-chair-3-inch) ## Best For - tranquilrelax enthusiasts ## Why This Product - Trusted tranquilrelax brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Stay-Put Stability:** Non-slip bottom with ergonomic curve keeps the cushion firmly in place—no slipping, no distractions. - • **All-Season Softness:** Premium soft foam stays pliable even in winter, ensuring consistent comfort year-round. - • **Spacious Comfort Zone:** Extra-large 17.7x16.1 inch cushion molds perfectly to your body for all-day support. - • **Breathable & Practical:** Removable mesh cover promotes airflow, preventing sweat and discomfort during extended use. - • **Pain-Relief Powerhouse:** Designed to alleviate sciatica, tailbone, hip, and leg discomfort for those long sitting sessions. ## Overview This large, OEKO-TEX STANDARD 100 certified seat cushion features premium soft foam that remains pliable year-round, a spacious ergonomic design (17.7x16.1x3 inches), and a non-slip curved base to provide superior support and pain relief for back, sciatica, hip, and coccyx discomfort during long sitting hours at the office, home, or on the go. ## Description Buy TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray | Medium-firm Support for Long Sitting, Washable Mesh Cover, Non-slip Base, Perfect for Car Seats & Short Drivers: Back & Seat Cushions - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - 【3-Inch Height Boost & Targeted Comfort】 Instantly raise your seat height by 3 inches for better visibility and reach! Combined with an ergonomic beveled edge design, this high-density memory foam cushion helps minimize pressure on your coccyx, tailbone, and sciatic area, offering soothing comfort for long sitting hours or post-surgery support - 【Improves Posture & Reduces Back Strain】 Turn any hard chair into an ergonomic seat. The thoughtful beveled edge design encourages a natural, upright sitting posture by supporting proper pelvic alignment. This helps distribute your weight evenly, reducing strain on your lower back, hips, and thighs - whether you're working 8+ hours at a desk or on a long drive - 【Medium-Firm Support That Won't Flatten】 Please note: To provide proper ergonomic support, this cushion is intentionally designed with a Medium-Firm feel, NOT a plush, sink-in feel. If you prefer ultra-soft foam, this may not be the right fit. Unlike soft cushions that quickly bottom out, our premium memory foam holds its shape all day, providing stable, resilient lift that won't flatten over time - 【Extra Large & Perfect for Short Individuals】 Measuring 17.7" x 16.1", this cushion accommodates adults comfortably while providing the perfect 3-inch height boost. Ideal for short drivers needing better road visibility, seniors needing extra height to transition in and out of chairs, wheelchair users, and anyone seeking reliable support for office chairs, car seats, dining chairs, and travel situations - 【Non-Slip Rubber Base & Easy to Wash】 Say goodbye to constant adjusting! A sturdy anti-slip rubber bottom locks the cushion securely in place, so it won't slide around on your office chair, car seat, or wheelchair. The breathable mesh cover features a durable zipper, making it easily removable and machine-washable for hassle-free hygiene ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D1TXVKM4 | | Age Range Description | Adult | | Best Sellers Rank | #728 in Office Products ( See Top 100 in Office Products ) #6 in Back Cushions & Seat Cushions | | Brand | TranquilRelax | | Brand Name | TranquilRelax | | Color | Gray | | Customer Reviews | 4.3 out of 5 stars 2,535 Reviews | | Fabric Type | 100% Polyester Mesh Cover | | Fill Material | Memory Foam | | Item Dimensions L x W | 17.71"L x 16.14"W | | Item Firmness Description | Medium Firm | | Item Highlight | Medium-firm Support for Long Sitting, Washable Mesh Cover, Non-slip Base, Perfect for Car Seats & Short Drivers | | Item Weight | 0.95 kg | | Manufacturer | TranquilRelax | | Manufacturer Part Number | MPN-TR0001-GE | | Material Features | Breathable, Moisture Wicking | | Material Type | Memory Foam | | Material Type Free | Formaldehyde Free, Latex Free | | Model Name | MPN-TR0001-GE | | Model Number | MPN-TR0001-GE | | Number of Pieces | 1 | | Pattern | Solid | | Product Care Instructions | The memory foam core is not washable. For easy care, remove the zippered cover and machine wash cold on a gentle cycle. Do not bleach or tumble dry. Air dry completely before reusing. | | Recommended Uses For Product | Driving, Reading, Resting, Sitting, Traveling | | Shape | Rectangular | | Size | Large | | Special Feature | Anti-Slip, Moisture-Wicking, Portable, Removable Cover, Breathable | | Special Features | Anti-Slip, Moisture-Wicking, Portable, Removable Cover, Breathable | | Specific Uses For Product | Casual sitting, Long-haul drivers, Office workers, Work-from-home | | Target Use Body Part | Buttocks, Legs | | Unit Count | 1 Count | ## Product Details - **Brand:** TranquilRelax - **Special Feature:** Anti-Slip, ‎Breathable - **Color:** Grey - **Size:** Large - **Fill Material:** Memory Foam ## Images ![TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray - Image 1](https://m.media-amazon.com/images/I/81Ysjo-myOL.jpg) ![TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray - Image 2](https://m.media-amazon.com/images/I/71-npehpNmL.jpg) ![TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray - Image 3](https://m.media-amazon.com/images/I/81n-ORjl23L.jpg) ![TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray - Image 4](https://m.media-amazon.com/images/I/71QKO3D5rSL.jpg) ![TranquilRelax Memory Foam Seat Cushion for Office Chair, 3-Inch, Gray - Image 5](https://m.media-amazon.com/images/I/71gGZ6HhFoL.jpg) ## Available Options This product comes in different **Color, Size** options. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/647014768-tranquilrelax-memory-foam-seat-cushion-for-office-chair-3-inch](https://www.desertcart.jp/products/647014768-tranquilrelax-memory-foam-seat-cushion-for-office-chair-3-inch) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-28*