---
product_id: 384895323
title: "curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black)"
brand: "curble"
price: "£126.05"
currency: GBP
in_stock: true
reviews_count: 13
category: "Curble"
url: https://www.desertcart.co.uk/products/384895323-curble-grand-extra-wide-ergonomic-seat-support-sit-straighter-without
store_origin: GB
region: United Kingdom
---

# Portable for office, home & car Supports up to 1,190 lbs load Extra wide ergonomic design curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black)

**Brand:** curble
**Price:** £126.05
**Availability:** ✅ In Stock

## Summary

> 🖤 Sit smart, stand tall—your back’s new best friend.

## Quick Answers

- **What is this?** curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black) by curble
- **How much does it cost?** £126.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/384895323-curble-grand-extra-wide-ergonomic-seat-support-sit-straighter-without)

## 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

- • **Toxin-Free Comfort:** Made in Korea with VOC-free materials, ensuring safe, healthy use all day.
- • **Engineered for Endurance:** Firm PU foam supports heavy loads up to 1,190 lbs without losing shape.
- • **Sit Straighter Instantly:** No straps or adjustments—just sit and feel natural posture alignment.
- • **Anywhere, Anytime Support:** Lightweight and portable—transform any seat into an ergonomic haven.
- • **Build Better Habits Effortlessly:** Passive posture trainer that helps you maintain perfect alignment without thinking.

## Overview

The Curble Grand is an extra-wide, ergonomic seat support designed to improve posture passively without straps or adjustments. Made with durable, toxin-free materials and engineered to support up to 1,190 lbs, it’s lightweight and portable for use at the office, home, or in your car. This innovative posture trainer encourages natural spinal alignment, helping busy professionals build healthier sitting habits effortlessly.

## Description

Buy curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black): Back & Seat Cushions - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Life saver - I bought my Curble 3 years ago. Ever since I have not taking it off my chair. I work in an office and it been the best investment I have done 100/100. My back pain definitely has gone away. My posture it better. It makes a difference. Price might seen high for a back support it worth your money. I would definitely buy the circle before buying an uncomfortable chair pillow. I would say I would want the pillow button to be a bit more cushion. It will save you money and some physical therapy would try it before going there.
Review: Overall good. - A little bit hard(not so soft) to seat but very good for low back.

## Features

- Polyester
- 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 | B09HXL9QSZ |
| Age Range Description | Adult |
| Best Sellers Rank | #19,004 in Office Products ( See Top 100 in Office Products ) #104 in Back Cushions & Seat Cushions |
| Brand | curble |
| Brand Name | curble |
| Coin Variety 1 | Lumbar Support |
| Color | Black |
| Customer Reviews | 4.1 out of 5 stars 428 Reviews |
| Fabric Type | Polyester |
| Fill Material | Foam |
| Included Components | Curble Chair |
| Item Dimensions L x W | 6.5"L x 5"W |
| Item Firmness Description | Firm |
| Item Type Name | Back support, Lumbar support |
| Item Weight | 1.02 kg |
| Manufacturer | ablue Co., Ltd. |
| Manufacturer Part Number | CCGB |
| Material Type | Polyamide 6 resin |
| Material Type Free | Lead Free, PBDE Free |
| Model Name | Curble Chair_Grand_PL_Black |
| Model Number | CCGB |
| Number of Pieces | 1 |
| 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 Feature | Ergonomic, Lightweight, Portable |
| Special Features | Ergonomic, Lightweight, Portable |
| Specific Uses For Product | Scoliosis |
| Target Use Body Part | Back |
| Unit Count | 1 Count |

## Product Details

- **Brand:** curble
- **Color:** Black
- **Fill Material:** Foam
- **Size:** W16.5 x D12.7 x H13.6 inch
- **Special Feature:** Ergonomic, Lightweight, Portable

## Images

![curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black) - Image 1](https://m.media-amazon.com/images/I/71ZQ9AoLijL.jpg)
![curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black) - Image 2](https://m.media-amazon.com/images/I/81-mah5Kd1L.jpg)
![curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black) - Image 3](https://m.media-amazon.com/images/I/711k-qdfZNL.jpg)
![curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black) - Image 4](https://m.media-amazon.com/images/I/71vWOikXBEL.jpg)
![curble Grand– Extra Wide Ergonomic Seat Support, Sit Straighter Without Effort, Passive Posture Trainer for Office, Home & Car (Black) - Image 5](https://m.media-amazon.com/images/I/81LpP+u6tHL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Does it work for big butt/high butt people?**
A: It depends on how big is but normally works.

**Q: let me get this straight -- i need the chair AND i need the cover? Whats the difference b/t sitting crosslegged, on top of a small cushion and this?**
A: The cover is not necessary but we recommend to who want a little more cushioning.
The difference b/t Curble Chair and a kneeling chair is that Curble Chair helps you to sit up straight by supporting your back while providing the comfort of your legs.

**Q: Where do find the size chart?**
A: Please refer to the video. Curble Grand is W16.5 x D12.7 x H13.6 inch which is a suitable size for adults. We also have other smaller models for petite, teenagers, and kids.

**Q: Where can I purchase replacement cushions and stops?  How much more cushion does the cover provide?  Thank you.**
A: We are working on the replacement cushion to launch it on Amazon within 2023.
We highly recommend the cover because you can use Curble Chair more comfortably since it covers all the edges of the Curble Chair and provide good ventilation with air mesh material.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Life saver
*by V***3 on September 16, 2026*

I bought my Curble 3 years ago. Ever since I have not taking it off my chair. I work in an office and it been the best investment I have done 100/100. My back pain definitely has gone away. My posture it better. It makes a difference. Price might seen high for a back support it worth your money. I would definitely buy the circle before buying an uncomfortable chair pillow. I would say I would want the pillow button to be a bit more cushion. It will save you money and some physical therapy would try it before going there.

### ⭐⭐⭐⭐⭐ Overall good.
*by A***R on September 24, 2026*

A little bit hard(not so soft) to seat but very good for low back.

### ⭐⭐⭐⭐⭐ No more back pain and aches
*by S***D on June 24, 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.

## Frequently Bought Together

- Curble GRAND(Extra Wide & Sturdy) – Ergonomic Chair Back Support, Lumbar Support for Good Posture Correction and Back Pain Relief, Perfect for Office Chair, Floor Seat, Work from Home, Patented(Black)
- QUTOOL Lumbar Support Pillow for Office Chair,Office Home Essentials,Back Support Pillow for Car, Chair Cushions,Back Pain Relief Improve Posture,Mesh Cover Double Adjustable Straps

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**Shop now:** [https://www.desertcart.co.uk/products/384895323-curble-grand-extra-wide-ergonomic-seat-support-sit-straighter-without](https://www.desertcart.co.uk/products/384895323-curble-grand-extra-wide-ergonomic-seat-support-sit-straighter-without)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-10-10*