--- product_id: 523346815 title: "Seat Cushion and Lumbar Support Pillow for Office Chair, Memory Foam Car Seat Cushions Back Support Pillows, Help Relieve Pain of Back, Lumbar, Tailbone and Sciatic Nerve（Black）" brand: "saireider" price: "¥19316" currency: JPY in_stock: true reviews_count: 5 category: "Saireider" url: https://www.desertcart.jp/products/523346815-seat-cushion-and-lumbar-support-pillow-for-office-chair-memory store_origin: JP region: Japan --- # Non-slip bottom & adjustable straps 100% pure high-density memory foam U-shaped coccyx cutout for pressure relief Seat Cushion and Lumbar Support Pillow for Office Chair, Memory Foam Car Seat Cushions Back Support Pillows, Help Relieve Pain of Back, Lumbar, Tailbone and Sciatic Nerve（Black） **Brand:** saireider **Price:** ¥19316 **Availability:** ✅ In Stock ## Summary > 🛋️ Sit Smart, Feel Elite: Elevate Your Comfort Game with SAIREIDER ## Quick Answers - **What is this?** Seat Cushion and Lumbar Support Pillow for Office Chair, Memory Foam Car Seat Cushions Back Support Pillows, Help Relieve Pain of Back, Lumbar, Tailbone and Sciatic Nerve（Black） by saireider - **How much does it cost?** ¥19316 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/523346815-seat-cushion-and-lumbar-support-pillow-for-office-chair-memory) ## 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 - • **Secure & Stable Fit:** Non-slip base plus dual adjustable straps keep cushions perfectly positioned on any chair or car seat. - • **Ergonomic Tailbone Relief:** U-shaped design suspends your tailbone, easing pressure and sciatica pain during long sits. - • **All-Day Posture Perfection:** Anatomically contoured lumbar pillow supports upper, middle, and lower back to reduce fatigue and promote healthy posture. - • **Versatile Comfort Anywhere:** Ideal for office, car, gaming, or travel—your go-to solution for back pain relief and enhanced sitting comfort. - • **Premium Memory Foam Support:** High-density, SGS-certified memory foam that quickly regains shape and provides firm, breathable comfort. ## Overview The SAIREIDER Seat Cushion and Lumbar Support Pillow set combines ergonomic U-shaped coccyx design with premium high-density memory foam to relieve back, tailbone, and sciatic nerve pain. Featuring a non-slip base and adjustable straps, it ensures stable, all-day support on office chairs, car seats, and more. Breathable, machine-washable covers and universal sizing make it a versatile, durable solution for professionals seeking posture improvement and pain relief. ## Description Comfort Memory Foam Seat Cushion & Lumbar Support Back Cushion Review: Comfy support - Very cushy and so comfortable. Soft fabric, firm support. So nice. Review: Excellent - Excellent cusion , very comfortable , excellent quality, buy without hesitation ## Features - 【Ergonomic Designs】*Our coccyx seat cushion adopt the design of "u" shaped cutout that keeps your tailbone suspended above hard seat surface, relieving pressure all along the back, tailbone and legs. It helps relieve sciatica and promote healthy posture. - *The lumbar support pillow is anatomically shaped to contour to the natural curve of your spine, giving you more support than ordinary back cushions. What's more, it supports the upper, middle, and lower back to effectively relieves back pain and fatigue after long sitting hours. - 【Premium Material】Our chair cushion and lumbar pillow are made of high density 100% pure memory foam( SGS certified environmental protection material), which could restore its shape quickly after long sitting and never be flattened! It could effectively support your body and disperse pressure while sitting for a long periods. - 【Thoughtful Designs】There's non- slip bottom on our butt pillow which could keep the cushion stay in place eventhough you move frequently on seat. The lumbar support pillow has dual adjustable elastic straps for secure placement on a variety of chairs. Removable and easy to clean covers keep your seat cushion and backrest always clean. - 【Wide Application】Our seat cushion and lumbar support pillow set is very applicable for office chair, home chair, car seat, gaming chair, airplane seat, wheelchair and so on. It's effective to release pressure and offer comfort. It’s perfect for office workers, drivers, teachers, students, people who like reading, etc. This would be a healthy gift with love for Christmas, New Year, birthday, mother's day, father's day, job promotion. - 【Risk-free Try】We believe that you would like our seat cushion and lumbar support set because its designs, quality and price are all thoughtful for you. 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. Customer satisfaction is our top priority. - 【kindly reminder】In order to maintain the cleanliness of the product, we use vacuum compression packaging. Some products require a period of time (usually a few minutes to 24 hours) to rebound due to the long compression time, which is a normal situation. Please do not worry ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BLHWZ3VJ | | Age Range Description | Adult | | Best Sellers Rank | #18,648 in Home ( See Top 100 in Home ) #108 in Home Office Back Cushions & Seat Cushions | | Brand | SAIREIDER | | Brand Name | SAIREIDER | | Coin Variety 1 | Lumbar Support,Memory Foam,Seat Cushion | | Color | Black | | Colour | Black | | Customer Reviews | 4.4 out of 5 stars 1,975 Reviews | | Fabric Type | 100% Memory Foam | | Fill Material | Memory Foam | | Fill material | Memory Foam | | Item Dimensions L x W | 35.1L x 30.5W centimeters | | Item Firmness Description | Firm | | Item Type Name | Seat Cushion and Lumbar Pillow | | Manufacturer | SAIREIDER | | Manufacturer Part Number | seat cushion lumbar support-01b | | Material Features | Breathable | | Material Type | Memory Foam | | Model Name | Seat Cushion and Back Support Pillow | | Model Number | Seat Cushion &Back Support-LS01b | | Number of Pieces | 1 | | Pattern | Solid | | Product Care Instructions | Machine Wash | | Recommended Uses For Product | Car | | Shape | Rectangular | | Size | Universal dimensions | | Special Features | Portable | | Special features | Portable | | Target Use Body Part | Back | | UPC | 342976985661 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** SAIREIDER - **Colour:** Black - **Fill material:** Memory Foam - **Size:** Universal dimensions - **Special features:** Portable ## Images ![Seat Cushion and Lumbar Support Pillow for Office Chair, Memory Foam Car Seat Cushions Back Support Pillows, Help Relieve Pain of Back, Lumbar, Tailbone and Sciatic Nerve（Black） - Image 1](https://m.media-amazon.com/images/I/61Y15u9wz0L.jpg) ## Questions & Answers **Q: How long do I need to let this “rise” out of the packaging before I use it?** A: The moment you cut into the plastic, it should rise. The package reminds me of the vacuum-seal products on the market. **Q: Is it to soft that it won’t support your tailbone?** A: It has good support, however if you are tall it raises you up a bit. I use it on trips longer than 2 hours and find it helps. **Q: I'm a large man at 300 lbs? Will it work or will I just pancake it?** A: It's a little more than straight mem foam so it's not too bad, I am 300+ lbs as well and I use it in the car , seems to work well.... **Q: What is the feel of the cover fabric?** A: Soft and skin friendly ## Customer Reviews ### ⭐⭐⭐⭐⭐ Comfy support *by L***. on 24 August 2026* Very cushy and so comfortable. Soft fabric, firm support. So nice. ### ⭐⭐⭐⭐⭐ Excellent *by M***. on 21 September 2025* Excellent cusion , very comfortable , excellent quality, buy without hesitation ### ⭐⭐ Incompleto *by A***A on 10 November 2025* Venía incompleto, en la imagen indica que trae un cojín para el respaldo y otro para el asiento y solo traía el respaldo ## Frequently Bought Together - SAIREIDER Seat Cushion and Lumbar Support Pillow for Office Chair, Memory Foam Car Seat Cushions Back Support Pillows, Help Relieve Pain of Back, Lumbar, Tailbone and Sciatic Nerve（Black） - CasaZenith Foot Rest for Under Desk at Work - Ergonomic Foot Stools for Under Office Desk - Rocking Footrest with Roller Massager - Leg Rest for Chair, Computer Gaming - Promote Leg Circulation --- ## 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/523346815-seat-cushion-and-lumbar-support-pillow-for-office-chair-memory](https://www.desertcart.jp/products/523346815-seat-cushion-and-lumbar-support-pillow-for-office-chair-memory) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-25*