--- product_id: 592088451 title: "4.5 Inch Cold Gel Memory Foam Mattress Replacement for Sleeper Sofa and Couch Beds - Full Size CertiPUR-US Certified (Sofa Not Included)" brand: "rhyme source" price: "£616.03" currency: GBP in_stock: true reviews_count: 5 category: "Rhyme Source" url: https://www.desertcart.co.uk/products/592088451-4-5-inch-cold-gel-memory-foam-mattress-replacement-sleeper store_origin: GB region: United Kingdom --- # 4.5-inch thickness for balanced comfort Gel layer cools to reduce heat buildup Full size 73"x52" fits most sleeper sofas 4.5 Inch Cold Gel Memory Foam Mattress Replacement for Sleeper Sofa and Couch Beds - Full Size CertiPUR-US Certified (Sofa Not Included) **Brand:** rhyme source **Price:** £616.03 **Availability:** ✅ In Stock ## Summary > ❄️ Sleep Cool, Support Strong — Upgrade Your Sofa Game! ## Quick Answers - **What is this?** 4.5 Inch Cold Gel Memory Foam Mattress Replacement for Sleeper Sofa and Couch Beds - Full Size CertiPUR-US Certified (Sofa Not Included) by rhyme source - **How much does it cost?** £616.03 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/592088451-4-5-inch-cold-gel-memory-foam-mattress-replacement-sleeper) ## Best For - rhyme source enthusiasts ## Why This Product - Trusted rhyme source brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Fit:** Designed for full-size sleeper sofas, couches, campers, and even floor use. - • **Tailored Support:** High-density foam contours to your body, relieving pressure points and back pain. - • **Cool Comfort, Always:** Gel-infused memory foam dissipates heat for a refreshing night's sleep. - • **Travel-Ready & Easy Setup:** Vacuum-packed for effortless transport; expands to full shape within 72 hours. - • **Durability Meets Convenience:** CertiPUR-US certified foam ensures long-lasting resilience and eco-friendly peace of mind. ## Overview This 4.5-inch full-size gel memory foam mattress replacement combines a 2-inch cooling gel layer with a 2.5-inch firm polyurethane base to deliver medium-firm support and superior pressure relief. Certified by CertiPUR-US and OEKO-TEX, it’s designed for sleeper sofas, couches, RVs, and more, offering durable comfort with temperature regulation in a portable, vacuum-packed form. ## Description 2-inch Gel Memory Foamand a 2.5-inch foam support base Review: Colchón firme a pesar de ser delgado. Se flexiona bien. - Colchón firme y resistente. Ptotege bien de la estructura metálica del sofá. Review: Comfortable Mattress ## Features - Full size pull-out mattress measures 73"L x 52"W x 4.5"TH. The mattress is vacuum packed for easy transportation to family and friends. Please allow 24 to 72 hours for the mattress to return to its full shape, ensuring you enjoy quality sleep - Cold Gel Memory foam mattresses offer superior pressure relief and support by conforming to the body's pressure points.which involves incorporating a gel layer in the mattress to dissipate and absorb body heat. This effectively lowers the surface temperature of the mattress, delivering a cooler sleeping experience. - Gel Memory foam mattresses are made of high-density memory foam, providing exceptional durability and longevity. has passed the OEKO-TEX certification CertiPUR-US certification.They retain their shape and resilience over time, delivering consistent support and comfort, thus extending the lifespan of the mattress - Our memory mattresses are not only suitable for folding sofa beds, but also compatible with other furniture or boats, campers&RVs. They can also be directly placed on the floor for use, suitable for various places you want - Memory Foam Sleeper Sofa bed Mattress combines a 2.5in firm polyurethane foam base with a 2in Gel Memory foam，memory foam mattresses are highly temperature-sensitive and adjust their firmness based on body heat. They become softer and more contouring to the body's curves, providing additional support and comfort ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CLV712F3 | | Additional Features | Washable Material | | Age Range Description | Adult | | Best Sellers Rank | #171,382 in Home ( See Top 100 in Home ) #1,216 in Mattresses | | Brand | Rhyme source | | Brand Name | Rhyme source | | Color | White | | Construction Type | Gel Foam, Foam | | Cover Material | Polyester | | Cover material | Polyester | | Customer Reviews | 4.2 out of 5 stars 484 Reviews | | Fill Material | Gel Memory Foam, Memory Foam, foam | | Is Customizable? | No | | Is Electric | No | | Is Foldable | Yes | | Item Depth | 4.5 inches | | Item Dimensions | 185.4 x 132.1 x 11.4 centimeters | | Item Dimensions L x W x Thickness | 185.4L x 132.1W x 11.4Th centimeters | | Item Firmness Description | Medium | | Item firmness description | Medium | | Manufacturer | Jinying10 | | Material Type | Memory Foam Gel Foam Foam | | Mattress Comfort Layer Material | Gel Memory Foam | | Model Name | 4.5 Inch Cool Gel Memory Foam | | Model Number | JSB-4.5GC-FSR | | Number of Layers | 2 | | Portable | Yes | | Product Benefits | Pressure Relief, Back Pain Relief, Temperature Regulation | | Product Care Instructions | Hand Wash Only | | Product dimensions | 185.4L x 132.1W x 11.4Th centimeters | | Size | Full | | Style Name | contemporary | | Top style | Gel Top | | top-style | Gel Top | ## Product Details - **Brand:** Rhyme source - **Colour:** White - **Cover material:** Polyester - **Fill material:** Gel Memory Foam, Memory Foam, foam - **Item firmness description:** Medium - **Number of layers:** 2 - **Product dimensions:** 185.4L x 132.1W x 11.4Th centimeters - **Size:** Full - **Special features:** Washable Material - **Top style:** Gel Top ## Images ![4.5 Inch Cold Gel Memory Foam Mattress Replacement for Sleeper Sofa and Couch Beds - Full Size CertiPUR-US Certified (Sofa Not Included) - Image 1](https://m.media-amazon.com/images/I/61hcRa2Yt-L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Colchón firme a pesar de ser delgado. Se flexiona bien. *by B***A on 22 September 2025* Colchón firme y resistente. Ptotege bien de la estructura metálica del sofá. ### ⭐⭐⭐⭐⭐ Comfortable Mattress *by J***H on 14 January 2026* ### ⭐⭐⭐⭐⭐ Totally worth it! *by C***E on 27 August 2025* ## Frequently Bought Together - Rhyme Source 4.5 Inch Cold Gel Memory Foam Sofa Bed Mattress Replacement, Full Size, Blue, Medium Firmness - Meliusly Heavy Duty Sleeper Sofa Support Board (48x48 - Full 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 Full Mattress Pad, 3M Scotchgard, Microfiber Mattress Topper Fitted Elastic Pocket Fits Up to 8 Inch, Full 54x72, White --- ## 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.co.uk/products/592088451-4-5-inch-cold-gel-memory-foam-mattress-replacement-sleeper](https://www.desertcart.co.uk/products/592088451-4-5-inch-cold-gel-memory-foam-mattress-replacement-sleeper) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-19*