--- product_id: 496269511 title: "curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red)" brand: "curble" price: "¥79305" currency: JPY in_stock: true reviews_count: 5 category: "Curble" url: https://www.desertcart.jp/products/496269511-curble-grand-2-pack-extra-wide-ergonomic-seat-support-sit store_origin: JP region: Japan --- # Lightweight & portable for any seat Supports up to 1,190 lbs compressive load Extra-wide ergonomic L-shape (41.9x32.3 cm) curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red) **Brand:** curble **Price:** ¥79305 **Availability:** ✅ In Stock ## Summary > 🧘‍♂️ Sit smart, stand tall—posture perfected effortlessly. ## Quick Answers - **What is this?** curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red) by curble - **How much does it cost?** ¥79305 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/496269511-curble-grand-2-pack-extra-wide-ergonomic-seat-support-sit) ## Best For - curble enthusiasts ## Why This Product - Trusted curble brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Micro-Habit Builder:** Consistent use builds effortless, healthy posture habits—your back’s new best friend. - • **Gentle Yet Firm Support:** Encourages natural spine alignment without forcing or discomfort. - • **Engineered for Endurance:** Durable PU foam passes rigorous KOTITI & SGS safety tests, toxin-free and built to last. - • **Sit Straighter Instantly:** No straps or adjustments—just sit and feel natural posture alignment. - • **Universal Fit, Anywhere Use:** Transforms any chair, couch, or car seat into an ergonomic workstation. ## Overview The Curble Grand 2 Pack offers an extra-wide, L-shaped ergonomic seat support designed to naturally align your spine without straps or adjustments. Made in Korea with certified toxin-free PU foam, it supports up to 1,190 lbs and is lightweight for use at home, office, or in the car. This durable, portable posture trainer encourages gentle, passive correction, helping busy professionals build healthier sitting habits with ease. ## Description Stop Forcing Your Posture. Let Curble Do the Work.Proudly Made in Korea, the Curble Grand represents the pinnacle of ergonomic seating technology, backed by strict KOTITI and SGS safety certifications.We all know the feeling: you start the day sitting up straight, but within an hour, you're slouching over your keyboard. Most solutions involve uncomfortable braces or overly soft pillows that collapse under your weight.The Curble Grand isn't just a cushion: it's a structural support system. By simply sitting in it, the unique unibody design gently tilts your pelvis forward, naturally stacking your spine in a healthier alignment. No straps, no complicated setups—just sit and work.If it feels a bit firm at first, that means it's working! Your body has adapted to years of slouching. Give it a few days of short sessions, and you'll soon wonder how you ever sat without it. Review: No more back pain and aches - Let me say I have struggled with low back pain for years. When I sit in my office chair I always for some reason sit toward the front so my lower back doesn't have support. I decided to get the Curble. I originally ordered the Wider Curble and honestly it was very small that my behind didn't even fit on it. I sent it back and got the Grande Curble. It fits perfectly and has so much support on lower back. It has a little bit of cushion on the seat and back. It is made out of some type of heavy plastic but seems durable. I weigh 165 and am 5'8 and the height of the back support hits me mid back. It is very light weight so it can easily move to a different chair with you or take in the car. Even if you are a smaller person I would go ahead and get the Grande to have a little extra room. The shape of it makes your behind fit in it a certain way where you get the most support. Review: Very supportive - I bought this for a friend who had previously injured his back, and he says it has made a big difference. It provides excellent support and helps relieve the strain on his lower back. With the seat, he can sit in a chair much longer without feeling uncomfortable. Without it, his back gets tired and starts to ache fairly quickly. He also likes that it’s wider than many others, so it doesn’t feel cramped or restrictive. The quality is great, it’s comfortable, and it offers the support he was looking for. ## Features - SIT BETTER INSTANTLY — NO STRAPS, NO ADJUSTMENTS: Just sit down and feel your body naturally guided into a more upright position. Unlike bulky cushions that require constant readjustment, the Curble Grand works passively to support your spine the moment you sit. - DESIGNED TO SUPPORT, NOT FORCE: Unlike rigid posture braces that aggressively push your back, Curble encourages gentle, natural alignment. Proudly Made in Korea, it has passed rigorous KOTITI and SGS safety tests, ensuring it is completely free of VOCs in the PU foam and harmful substances in the fabric. - BALANCED FIRMNESS & EXTREME DURABILITY: Engineered to provide structural support, it boasts a maximum compressive load of 1,190 lbs (540 kg). (Note: Bouncing or forcefully pushing back may exceed this limit). It may take a few days for your body to adapt. Start with short 30-minute sessions - WORKS ANYWHERE YOU SIT: Lightweight and highly portable, it transforms any seat into an ergonomic workstation. Perfect for office chairs, couches, car seats, gaming chairs, or even sitting directly on the floor. - A MICRO-HABIT BUILDER: Use it consistently at the office, home, or in your car so you never break your healthy sitting habits. Consistency is key to building better posture without even thinking about it. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09HXKZKT9 | | Age Range Description | Adult | | Best Sellers Rank | 1,782,064 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 2,436 in Back & Seat Cushions | | Brand | curble | | Brand Name | curble | | Coin Variety 1 | Lumbar Support | | Colour | 2 Pack Red | | Customer Reviews | 4.1 out of 5 stars 679 Reviews | | Fabric Type | Polyester | | Fill Material | Foam | | Fill material | Foam | | Included Components | 2 Curble Chair Adult | | Item Dimensions L x W | 41.9L x 32.3W centimetres | | Item Firmness Description | Firm | | Item Shape | L-shape | | Item Type Name | Back Support, Lumbar Support | | Item Weight | 1.02 Kilograms | | Manufacturer | ablue Co., Ltd. | | Manufacturer Part Number | CCGR2 | | Material Type | Polyamide 6 resin | | Material Type Free | Lead Free, PBDE Free | | Model Name | Curble Chair_Grand_PL_Red_2P | | Model Number | CCGR2 | | Number of Pieces | 2 | | Pattern | Solid | | Product Care Instructions | Hand Wash Only | | Recommended Uses For Product | Reading, Sitting, Studying | | Shape | L-shape | | Size | W16.5 x D12.7 x H13.6 inch | | Special Features | Ergonomic, Lightweight, Portable | | Special feature | Ergonomic , Lightweight, Portable | | Specific Uses For Product | Posture Correction | | Target Use Body Part | Body | | Unit Count | 1.0 count | ## Product Details - **Brand:** curble - **Colour:** 2 Pack Red - **Fill material:** Foam - **Size:** W16.5 x D12.7 x H13.6 inch - **Special feature:** Ergonomic, Lightweight, Portable ## Images ![curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red) - Image 1](https://m.media-amazon.com/images/I/71rNX96U3LL.jpg) ![curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red) - Image 2](https://m.media-amazon.com/images/I/71fkN3FaZlL.jpg) ![curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red) - Image 3](https://m.media-amazon.com/images/I/61BKkA-nhlL.jpg) ![curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red) - Image 4](https://m.media-amazon.com/images/I/712q5Cu-GLL.jpg) ![curble Grand 2 Pack– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Red) - Image 5](https://m.media-amazon.com/images/I/71sGKv7fqhL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ No more back pain and aches *by S***D on 24 June 2026* Let me say I have struggled with low back pain for years. When I sit in my office chair I always for some reason sit toward the front so my lower back doesn't have support. I decided to get the Curble. I originally ordered the Wider Curble and honestly it was very small that my behind didn't even fit on it. I sent it back and got the Grande Curble. It fits perfectly and has so much support on lower back. It has a little bit of cushion on the seat and back. It is made out of some type of heavy plastic but seems durable. I weigh 165 and am 5'8 and the height of the back support hits me mid back. It is very light weight so it can easily move to a different chair with you or take in the car. Even if you are a smaller person I would go ahead and get the Grande to have a little extra room. The shape of it makes your behind fit in it a certain way where you get the most support. ### ⭐⭐⭐⭐⭐ Very supportive *by V***N on 20 July 2026* I bought this for a friend who had previously injured his back, and he says it has made a big difference. It provides excellent support and helps relieve the strain on his lower back. With the seat, he can sit in a chair much longer without feeling uncomfortable. Without it, his back gets tired and starts to ache fairly quickly. He also likes that it’s wider than many others, so it doesn’t feel cramped or restrictive. The quality is great, it’s comfortable, and it offers the support he was looking for. ### ⭐⭐⭐⭐⭐ a lifesaver *by A***R on 1 October 2023* This was a lifesaver for my back when I injured my tail bone --- ## 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/496269511-curble-grand-2-pack-extra-wide-ergonomic-seat-support-sit](https://www.desertcart.jp/products/496269511-curble-grand-2-pack-extra-wide-ergonomic-seat-support-sit) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-24*