---
product_id: 21837967
title: "DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa"
brand: "dynastymattress"
price: "A$798"
currency: AUD
in_stock: false
reviews_count: 8
url: https://www.desertcart.com.au/products/21837967-dynastymattress-4-inch-cool-gel-memory-foam-mattress-sleeper-convertible
store_origin: AU
region: Australia
---

# compressed & rolled delivery cool gel memory foam 4-inch dual-layer foam DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa

**Brand:** dynastymattress
**Price:** A$798
**Availability:** ❌ Out of Stock

## Summary

> 🛋️ Upgrade your sofa bed game—comfort that folds out like royalty!

## Quick Answers

- **What is this?** DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa by dynastymattress
- **How much does it cost?** A$798 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/21837967-dynastymattress-4-inch-cool-gel-memory-foam-mattress-sleeper-convertible)

## Best For

- dynastymattress enthusiasts

## Why This Product

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

## Key Features

- • **Stay Cool All Night Long:** Innovative gel-infused memory foam promotes airflow, ensuring you never wake up overheated on your sleeper sofa.
- • **Hygienic & Easy to Maintain:** Includes a washable zipper cover, making cleanup simple and keeping your mattress fresh and inviting.
- • **Cloud-like Comfort in 4 Inches:** Experience premium support with a 2-inch gel memory foam layer paired with a 2-inch high-density foam base for pressure relief and durability.
- • **Effortless Setup & Portability:** Ships compressed and rolled for easy delivery and quick expansion—ready to use within hours, no hassle involved.
- • **Versatile Fit for Modern Living:** Designed to fit most standard queen-size sleeper sofas, plus perfect for guest rooms, RVs, campers, and boats.

## Overview

The DynastyMattress 4-inch Cool Gel Memory Foam Mattress is a queen-size, dual-layer mattress topper designed specifically for convertible folding sofas and couch beds. Featuring a breathable gel-infused memory foam layer atop a supportive foam base, it delivers firm yet pressure-relieving comfort while maintaining a cool sleep surface. The mattress ships compressed and rolled for convenient delivery and expands fully within hours. Its washable cover ensures easy maintenance, making it a versatile, affordable upgrade for any sleeper sofa, guest room, or mobile living space.

## Description

Buy DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa: Mattresses - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Comfy for a sofa bed - The mattressfits our sleeper sofa perfectly and is fairly comfortable.
Review: Cloud 9! - I am always very skeptical of reviews on desertcart but I decided to try this mattress for my new sleeper sofa and I'm glad I looked into it and weighed out my options. This sofa mattress is incredibly comfortable. I sleep on a Sleep Number bed and this mattress is just as good! Looks are deceiving as it is a 4in to 4.5in mattress and kind of looks like a standard pillow top. It came coiled up in a box and it was "space packed" aka suctioned to be as flat as possible. It was easy to remove from the packaging and the plastic wrapping it came in. I laid it out for the night and it grew to its full size. People have complained about the odor but to me it smells like the plastic it came in, pretty standard for most things. I'd say that within 3 hours it was fully expanded and by 10 hours there was no more plastic odor. I am very happy with this as it is quite affordable. Some of the "top line" sleeper mattresses are at least $300-$500 and this one was half the price and of equal standard. You can't feel the sleeper base at all as the foam is very dense and even rolling around on it, it keeps a good shape. The memory foam springs back very quickly and helps relieve pressure on your butt and spine. I'd definitely recommend this to anyone who is skeptical about the reviews and is looking for a comfortable and affordable option for their sleeper sofa.

## Features

- MATTRESS ONLY Sofa not included: This pull-out sofa mattress topper is designed with gel memory foam for comfortable, supportive sleep at an affordable price. The foam contours to the body to enhance relaxation and provide a restful night’s sleep on your sleeper sofa. Each mattress ships compressed and rolled for easy delivery and setup.
- LAYERED DESIGN: With a 2-inch gel plush memory foam layer and a 2-inch foam support base, this sofa pad is vastly more comfortable than a traditional pull out couch mattress topper that either are flat mats or have springs. The memory foam layer is specifically designed to breathe, allowing the user to remain cool throughout the night.
- VERSATILE: Our comfortable pull out sofa mattress replacement has a variety of possible uses. Add the foldable sofa topper mattress to your sleeper sofa in your living room, place it on a platform bed frame in your guest room, or even use it in a trailer, camper van, boat or RV.
- SIZE: This replacement sleeper sofa mattress measures is perfect for most standard sofas. To ensure a compatible fit, we recommend measuring your sofa before purchasing. This sofa bed mattress comes equipped with a washable zipper cover, so cleaning is a breeze.
- DYNASTYMATTRESS: At DynastyMattress, we're dedicated to delivering a quality night’s sleep without the price tag of big name brands. We offer a wide range of comfortable sleep products, so there is something that suits every age group and life situation, providing a luxury experience for all. Warranty Included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #693,299 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,822 in Mattresses & Box Springs |
| Brand | DynastyMattress |
| Customer Reviews | 4.2 out of 5 stars 2,478 Reviews |
| Item Firmness Description | Firm |
| Item Weight | 20 Pounds |
| Product Dimensions | 72"L x 4"W x 58"Th |
| Size | Queen |
| Top Style | Gel Top |

## Product Details

- **Brand:** DynastyMattress
- **Cover Material:** Cotton
- **Fill Material:** Gel Memory Foam
- **Item Firmness Description:** Firm
- **Item Weight:** 20 Pounds
- **Number of Layers:** 2
- **Product Dimensions:** 72"L x 4"W x 58"Th
- **Size:** Queen
- **Top Style:** Gel Top
- **Weight Limit:** 600 Pounds

## Images

![DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa - Image 1](https://m.media-amazon.com/images/I/51Rg-76r1sL.jpg)
![DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa - Image 2](https://m.media-amazon.com/images/I/710f8lmPDiL.jpg)
![DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa - Image 3](https://m.media-amazon.com/images/I/715jL0rF1mL.jpg)
![DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa - Image 4](https://m.media-amazon.com/images/I/71MyBqI-UvL.jpg)
![DynastyMattress 4-inch Cool Gel Memory Foam Mattress Sleeper for Convertible Folding Sofa & Couch Beds - Queen Size Sofa - Image 5](https://m.media-amazon.com/images/I/71P8rFrxCLL.jpg)

## Questions & Answers

**Q: how long does it take for the odor to dissipate after opening?**
A: I opened it up at 1 PM and slept on it at 10 PM.  I smelled no odor.

**Q: What are the dimensions of the sofa, not the mattress?**
A: Listing is for sofa mattress only. Sofa is not included.

**Q: Is this only the mattress or it comes with the sofa?**
A: It does not fit up into the older sofa beds. Those with original mattress size of 66” wide by 68” long.

**Q: what is the width of the mattress. Can it accomodate 2 people?**
A: 72 inches long by 53 inches wide by 4.5 inches deep. Similar to a full size bed mattress. If the people are small they would be okay, but a queen or king size mattress would be more accommodating for two people.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Comfy for a sofa bed
*by K***4 on January 4, 2026*

The mattressfits our sleeper sofa perfectly and is fairly comfortable.

### ⭐⭐⭐⭐⭐ Cloud 9!
*by B***Z on March 19, 2021*

I am always very skeptical of reviews on Amazon but I decided to try this mattress for my new sleeper sofa and I'm glad I looked into it and weighed out my options. This sofa mattress is incredibly comfortable. I sleep on a Sleep Number bed and this mattress is just as good! Looks are deceiving as it is a 4in to 4.5in mattress and kind of looks like a standard pillow top. It came coiled up in a box and it was "space packed" aka suctioned to be as flat as possible. It was easy to remove from the packaging and the plastic wrapping it came in. I laid it out for the night and it grew to its full size. People have complained about the odor but to me it smells like the plastic it came in, pretty standard for most things. I'd say that within 3 hours it was fully expanded and by 10 hours there was no more plastic odor. I am very happy with this as it is quite affordable. Some of the "top line" sleeper mattresses are at least $300-$500 and this one was half the price and of equal standard. You can't feel the sleeper base at all as the foam is very dense and even rolling around on it, it keeps a good shape. The memory foam springs back very quickly and helps relieve pressure on your butt and spine. I'd definitely recommend this to anyone who is skeptical about the reviews and is looking for a comfortable and affordable option for their sleeper sofa.

### ⭐⭐⭐⭐ Decent couch mattress
*by C***L on October 2, 2025*

So much better than the bag of coils that came with my pullout coach! I bought a pullout bed couch for company that would be visiting fairly regularly and the mattress with the couch was horrible. This mattress is comfortable and well made. There is no smell. Give decent support for being a thin mattress and I slept fairly well on it. Definitely recommend

## Frequently Bought Together

- DynastyMattress Sofa Bed Mattress Queen Size 4-inch CoolBreeze Gel Memory Foam Sleeper for Convertible Folding Sofa & Couch Beds, Sofa Not Included (USA Made)
- Meliusly Heavy Duty Sleeper Sofa Support Board (48x60 - Queen Size) Reinforced Wood Sofa Bed Support, Pull Out Couch Mattress Board, Sleeper Bar Shield, SleeperSaver
- Sleep Philosophy Waterproof Sofa Bed Mattress Protector, Holden Sofa Bed Queen Mattress Pad, 3M Scotchgard, Microfiber Mattress Topper Fitted Elastic Pocket Fits Up to 8 Inch, Queen 60x72, White

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-20*