--- product_id: 486133216 title: "SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black)" brand: "saireider" price: "¥30169" currency: JPY in_stock: true category: "Saireider" url: https://www.desertcart.jp/products/486133216-saireider-office-chair-cushion-car-seat-cushion-memory-foam-coccyx store_origin: JP region: Japan --- # Lightweight & portable with side handle High-density memory foam for soft yet supportive comfort Ergonomic U-shape cutout for coccyx relief SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) **Brand:** saireider **Price:** ¥30169 **Availability:** ✅ In Stock ## Summary > 🪑 Sit Smart, Feel Elite: Elevate Your Posture Game ## Quick Answers - **What is this?** SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) by saireider - **How much does it cost?** ¥30169 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/486133216-saireider-office-chair-cushion-car-seat-cushion-memory-foam-coccyx) ## Best For - saireider enthusiasts ## Why This Product - Trusted saireider brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Use Cases:** Perfect for office, car, airplane, wheelchair, or home—comfort that travels with you - • **Portable & Practical:** Lightweight design with side handle for effortless transport anywhere - • **Thoughtful Hidden Zipper:** Protects your chair from scratches while allowing easy cover removal and washing - • **Ergonomic Coccyx Suspension:** Relieves tailbone pressure & sciatica pain with precision U-shaped design - • **Premium Memory Foam Comfort:** Soft yet supportive cushion that bounces back, ensuring all-day comfort ## Overview The SAIREIDER Office Chair Cushion features a high-density memory foam core with an ergonomic U-shaped cutout that suspends your coccyx, effectively relieving tailbone and sciatica pain while promoting healthy posture. Its lightweight, portable design includes a removable, washable cover with a hidden zipper and a convenient side handle, making it ideal for use in office chairs, cars, airplanes, and wheelchairs. Engineered for professionals who demand comfort and support during long sitting hours, this cushion combines premium materials with thoughtful design to enhance your daily seating experience. ## Description What could you get from this seat cushion? 1. Premium Memory Foam Material The office chair seat cushion is made of high-density memory foam, which is soft but supportive. This kind of material could greatly help relieve the pressure. 2. Ergonomic U-shape Cut The ergonomically designed "u" shaped cutout keeps your coccyx suspended above firm seat surface, relieving pressure all along the back, tailbone and legs. Which could relieve sciatica, coccyx pain and promote posture. 3. Thoughtful Designs We use hidden zipper on cover to avoid your chair being scratched by the zipper. We added a side belt on the cushion, it’s convenient for you to carry it to any place you may need it. 4. Practical for Various Occasions It’s portable and applicable to various occasions, such as office chair, car seat, home chair, airplane seat, wheel chair and so on. ## Features - [Ergonomic Design] Perfect office chair cushion, 100% memory foam cushion helps relieve the pressure while driving or sitting for long periods. The ergonomically designed "u" shaped cutout keeps your coccyx suspended above hard seat surface, relieving pressure all along the back, tailbone and legs. It also helps promote healthy posture. - [Premium Material] Different from other brands’ seat cushions that are too hard or lack of support, we put in more costs to increase the density of memory foam, which makes the cushion soft and supportive! When you sit on the cushion you would feel bouncy and comfortable just like sitting on a balloon. - [Thoughtful Designs] Removable soft and skin-friendly cover, non-slip bottom, side handle (portable and convenient). The extended hidden zipper makes it easier to remove the cover, aesthetic and helps avoid your chair being scratched by the exposed zipper. - [Wide Applications] Lightweight and durable car seat cushion, which is portable and applicable to various occasions, such as office chair, car seat, home chair, airplane seat, wheel chair and so on. It’s also a perfect gift for health! - [Guaranteed Customer Service] We believe that you would like our seat cushion because it could bring you comfort and health. But if you meet any problem or feel unsatisfied while using it, please feel free to contact us and we would provide a 100% satisfactory solution for you in 24 hours. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B091KVC9KD | | Age Range Description | Adult | | Best Sellers Rank | 2,976,402 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 3,589 in Back & Seat Cushions | | Brand Name | SAIREIDER | | Coin Variety 1 | Memory Foam,Seat Cushion | | Colour | Black | | Customer Reviews | 4.4 4.4 out of 5 stars (1,272) | | Fabric Type | 80% Cotton, 20% Polyester | | Fill Material | Memory Foam | | Item Dimensions L x W | 144.8L x 70.1W centimetres | | Item Firmness Description | Soft | | Item Shape | Semicircular | | Manufacturer | SAIREIDER | | Material Type | Memory Foam | | Model Name | SRD Seat Cushion-Black | | Model Number | SC-B0402 | | Number of Pieces | 1 | | Pattern | Solid | | Product Care Instructions | Machine Wash | | Recommended Uses For Product | Sitting | | Size | Universal dimensions | | Special Features | Lightweight,Portable,Removable | | Target Use Body Part | Back, Legs | | UPC | 767912424897 | | Unit Count | 1.0 count | ## Product Details - **Brand:** SAIREIDER - **Colour:** Black - **Fill material:** Memory Foam - **Size:** Universal dimensions - **Special feature:** Lightweight,Portable,Removable ## Images ![SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) - Image 1](https://m.media-amazon.com/images/I/61Ni-bOCkvL.jpg) ![SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) - Image 2](https://m.media-amazon.com/images/I/31m00Wx3NXL.jpg) ![SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) - Image 3](https://m.media-amazon.com/images/I/413IEjcDkUL.jpg) ![SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) - Image 4](https://m.media-amazon.com/images/I/51tZV3quY9L.jpg) ![SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) - Image 5](https://m.media-amazon.com/images/I/51cUolOB+IL.jpg) ## Frequently Bought Together - SAIREIDER Office Chair Cushion, Car Seat Cushion, Memory Foam Coccyx Cushion Pads for Tailbone Pain, Sciatica Relief Pillow, Correct Sitting Posture (Black) - BlissTrends Foot Rest for Under Desk at Work-Versatile Foot Stool with Washable Cover-Comfortable Footrest with 2 Adjustable Heights for Car,Home and Office to Relieve Back,Lumbar,Knee Pain-Black - SAIREIDER Comfortable Lumbar Support Pillow for Office Chair, Memory Foam Back Support Pillows for Car、Gaming Chair、 Home Chair, Back Pain Relief Improve Posture, Double Adjustable Straps(Black) --- ## 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/486133216-saireider-office-chair-cushion-car-seat-cushion-memory-foam-coccyx](https://www.desertcart.jp/products/486133216-saireider-office-chair-cushion-car-seat-cushion-memory-foam-coccyx) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-27*