---
product_id: 681023509
title: "- Couch Cushion Support for Sagging Seat, 20\"x20\"x2\" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3"
brand: "spongiduits"
price: "HK$546"
currency: HKD
in_stock: true
reviews_count: 8
category: "Spongiduits"
url: https://www.desertcart.hk/products/681023509-couch-cushion-support-for-sagging-seat-20x20x2-40d-high-density
store_origin: HK
region: Hong Kong
---

# 40D high-density foam firmness Customizable trim-to-fit 20"x20" perfect fit - Couch Cushion Support for Sagging Seat, 20"x20"x2" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3

**Brand:** spongiduits
**Price:** HK$546
**Availability:** ✅ In Stock

## Summary

> 🛋️ Elevate your lounge game—because your sofa deserves a second chance!

## Quick Answers

- **What is this?** - Couch Cushion Support for Sagging Seat, 20"x20"x2" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3 by spongiduits
- **How much does it cost?** HK$546 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/681023509-couch-cushion-support-for-sagging-seat-20x20x2-40d-high-density)

## Best For

- spongiduits enthusiasts

## Why This Product

- Trusted spongiduits brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored Comfort:** Trim to your exact sofa size for a seamless, personalized fit that feels built-in.
- • **Effortless Upgrade:** No tools, no hassle—just slide under cushions and enjoy renewed support in seconds.
- • **Premium Foam Power:** Crafted with durable 40D high-density foam that holds up to 250 lbs without losing shape.
- • **Long-Lasting Lounge:** Extends your sofa’s lifespan while maintaining firm, cozy seating for years to come.
- • **Sagging Sofa Savior:** Revives your couch cushions instantly, banishing dents and sags for a like-new feel.

## Overview

The Spongiduits Couch Cushion Support Set includes three 20"x20" curved foam boards made from premium 40D high-density foam. Designed to restore sagging cushions, these supports provide firm, durable backing that fits most sofas and can be trimmed for a custom fit. Easy to install with no assembly required, they help extend the life and comfort of your furniture while supporting up to 250 pounds per piece.

## Description

desertcart.com: Spongiduits Couch Cushion Support for Sagging Seat - 20" x 20" High-Density Curved Foam Sofa Cushion Support Board, Couch Supporter for Under The Cushions, Grey Set of 3 : Home & Kitchen

Review: Gives my cushion - Helped pit a lot with my sinking problem I was having with my couch.
Review: Served its purpose - I ordered these because my couch cushions have sunk in some spots. I can’t afford a new one right now so ordered these to try. They work well to raise and firm up the cushions. Could be a little thicker quality.

## Features

- 【Revitalize Your Sagging Seats】Our couch support is specially designed to restore sagging cushions and eliminate dents from prolonged use. It provides firm support, rejuvenating your sofa and elevating your comfort.
- 【Quick and Easy Installation】 Simply put our couch support under your cushions for an effortless fix. These couch supports for sagging cushions offer a fast, hassle-free solution to restore your sofa's original shape and support.
- 【High-Quality Materials】Crafted from premium 40D high-density foam, the curved arch design ensures superior firmness and stability, providing durable support that extends your sofa's lifespan and maintains its comfort.
- 【Customizable Fit】 Measuring 20" x 20" with a 2" center thickness, these sofa support for sagging cushions fit most household sofas and can be easily trimmed to achieve the ideal fit for your furniture.
- 【Warm tips】 Our sofa restoration cushion is vacuum packed and will regain its shape within a day after unpacking. If the product can not be restored to the original after opening the vacuum bag for a day, you can soak it in water, wring out the water to dry and then use it again, the restoration effect will be better.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DCDR5SQX |
| Age Range Description | All Age |
| Arm Style | Track |
| Assembly Required | No |
| Best Sellers Rank | #15,851 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #8 in Sofa Replacement Parts |
| Brand | Spongiduits |
| Brand Name | Spongiduits |
| Color | Grey-3pcs |
| Component Connector Assembly | Not Required |
| Cushion Construction | 40D high-density foam |
| Customer Reviews | 4.0 out of 5 stars 471 Reviews |
| Fill Material | High Density Foam |
| Frame Material Type | 40D High Density Foam |
| Has Removable Seat Cushion Cover | false |
| Indoor Outdoor Usage | Indoor |
| Is Customizable? | Yes |
| Item Dimensions D x W x H | 20"D x 20"W x 2"H |
| Item Firmness Description | firm |
| Item Height | 2 inches |
| Item Weight | 1.29 Kilograms |
| Manufacturer | FoamJoy |
| Material Features | Soft, Durable |
| Material Type | 40D High Density Foam |
| Number of Pieces | 3 |
| Required Assembly | No |
| Seat Back Fill Material | Foam |
| Seat Cushion Configuration | Multiple Cushion Seat |
| Seat Depth | 20 inches |
| Seat Fill Material | Foam |
| Seat Height | 2 Inches |
| Seating Capacity | 1 |
| Shape | Rectangular |
| Size | Arched| 20"x20"x2" |
| Style Name | Modern |
| UPC | 602835318406 |
| Weight Capacity Maximum | 250 Pounds |
| Weight Limit | 250 Pounds |

## Product Details

- **Brand:** Spongiduits
- **Assembly Required:** No
- **Seat Depth:** 20 inches
- **Seat Height:** 2 Inches
- **Weight Limit:** 250 Pounds
- **Seating Capacity:** 1
- **Product Dimensions:** 20"D x 20"W x 2"H
- **Item Weight:** 1.29 Kilograms
- **Color:** Grey-3pcs
- **Style:** Modern

## Images

![- Couch Cushion Support for Sagging Seat, 20"x20"x2" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3 - Image 1](https://m.media-amazon.com/images/I/61DKDrdG3kL.jpg)
![- Couch Cushion Support for Sagging Seat, 20"x20"x2" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3 - Image 2](https://m.media-amazon.com/images/I/719S6M3EzjL.jpg)
![- Couch Cushion Support for Sagging Seat, 20"x20"x2" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3 - Image 3](https://m.media-amazon.com/images/I/719rU+NHUWL.jpg)
![- Couch Cushion Support for Sagging Seat, 20"x20"x2" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3 - Image 4](https://m.media-amazon.com/images/I/71OR0dpsfXL.jpg)
![- Couch Cushion Support for Sagging Seat, 20"x20"x2" 40D High Density Curved Foam Sofa Cushion Support, Under-Cushion Sag Repair,Grey Set of 3 - Image 5](https://m.media-amazon.com/images/I/71sbJTDId7L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Gives my cushion
*by G***O on January 17, 2026*

Helped pit a lot with my sinking problem I was having with my couch.

### ⭐⭐⭐⭐ Served its purpose
*by T***L on January 17, 2026*

I ordered these because my couch cushions have sunk in some spots. I can’t afford a new one right now so ordered these to try. They work well to raise and firm up the cushions. Could be a little thicker quality.

### ⭐⭐⭐⭐⭐ Comfortable
*by G***Y on January 6, 2026*

Fixed the sag

## Frequently Bought Together

- FoamJoy Couch Cushion Support for Sagging Seat - 20" x 20" High-Density Curved Foam Sofa Cushion Support Board, Couch Supporter for Under The Cushions, Grey Set of 3
- GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 70 Sofa, Thick Plywood Boards Add Strong Seat Supports, Stays in Place, Replacement Stuffing Under Couches, Gray

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**Shop now:** [https://www.desertcart.hk/products/681023509-couch-cushion-support-for-sagging-seat-20x20x2-40d-high-density](https://www.desertcart.hk/products/681023509-couch-cushion-support-for-sagging-seat-20x20x2-40d-high-density)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-29*