--- product_id: 534456239 title: "FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified" brand: "fdw" price: "¥139507" currency: JPY in_stock: true category: "Fdw" url: https://www.desertcart.jp/products/534456239-fdw-6-inch-king-mattress-medium-firm-gel-memory-foam store_origin: JP region: Japan --- # Removable, machine-washable cover Gel-infused foam for cooling comfort 6-inch dual-layer memory foam construction FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified **Brand:** fdw **Price:** ¥139507 **Availability:** ✅ In Stock ## Summary > 🛌 Sleep smarter, not harder — cool comfort meets clean convenience! ## Quick Answers - **What is this?** FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified by fdw - **How much does it cost?** ¥139507 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/534456239-fdw-6-inch-king-mattress-medium-firm-gel-memory-foam) ## Best For - fdw enthusiasts ## Why This Product - Trusted fdw brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Convenience:** Delivered in a box, expands fully within 72 hours—setup made simple. - • **Stay Cool All Night:** Ventilated gel memory foam regulates temperature for uninterrupted sleep. - • **Effortless Freshness:** Removable, breathable cover is machine washable for easy maintenance. - • **Certified Safe & Durable:** CertiPUR-US certified foam ensures a healthier, chemical-free sleep environment. - • **Perfect Support for Every Sleeper:** Medium-firm dual-layer design aligns spine and cushions pressure points. ## Overview The FDW 6 Inch King Mattress combines gel-infused memory foam with a high-density support base to deliver medium-firm comfort that adapts to all sleeping positions. Featuring a breathable, removable cover and CertiPUR-US certification, it offers pressure relief, spinal alignment, and a cooler sleep experience—all conveniently shipped compressed in a box for easy setup. ## Description Upgrade your sleep experience with FDW’s premium mattress, thoughtfully engineered to deliver lasting comfort, optimal support, and user-friendly convenience. Featuring a dual-layer construction that combines adaptive memory foam and a durable high-density support base, this mattress conforms to your body’s natural curves while providing targeted pressure relief and proper spinal alignment. Ideal for all sleeping positions, whether on your back, side, or stomach. It helps reduce tossing and turning by cushioning key pressure points. The breathable memory foam enhances airflow and temperature regulation, so you stay cool and comfortable all night. A soft, skin-friendly, removable cover is machine-washable for easy cleaning and long-term freshness. Conveniently compressed in a compact box for efficient delivery, the mattress expands to its full shape within 72 hours. FDW mattresses are CertiPUR-US certified, made without harmful chemicals, ensuring a healthier and safer sleep environment. ## Features - VENTILATED GEL FOAM: Gel-infused memory foam mattress enhances airflow and regulates temperature, helping you stay cooler and more comfortable throughout the night for deeper, uninterrupted sleep. - ALL-POSITION SUPPORT: Whether you sleep on your back, side, or stomach or toss and turn, this memory foam mattress offers balanced firmness, cooler comfort, and proper alignment all night. - DUAL-LAYER CONSTRUCTION: This King Mattress features a total thickness of 6 inches, consisting of a 1-inch layer of gel memory foam over a 5-inch high-density base support foam core. - PRESSURE RELIEF & SPINAL SUPPORT: Body-contouring memory foam cushions pressure points like shoulders and hips while aligning your spine for deeper, more restorative sleep every night. - EASY MAINTENANCE: Includes a soft, breathable, and removable cover that unzips for easy machine washing, keeping your memory foam mattress fresh, hygienic, and like new with minimal effort. - MATTRESS IN A BOX: Our mattresses are easy to move. Just place it in any room, unbox and unroll the memory foam mattress, and watch it fully expand within 72 hours for restful sleep. - CERTIFIED CERTIPUR-US MATTRESS: Made without harmful chemicals, heavy metals, or ozone depleters ensuring a safer, healthier sleep environment with long-lasting comfort and trusted durability. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B2NMYWR3 | | Additional Features | Removable Cover | | Age Range Description | Adult | | Best Sellers Rank | #532 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #5 in Mattresses | | Brand Name | FDW | | Color | White | | Construction Type | Memory Foam | | Cover Material | soft knitted fabric | | Customer Reviews | 4.3 4.3 out of 5 stars (7,349) | | Fill Material | Gel Memory Foam | | Included Components | 1 mattress | | Item Depth | 6 inches | | Item Dimensions | 80 x 76 x 6 inches | | Item Dimensions L x W x Thickness | 80"L x 76"W x 6"Th | | Item Firmness Description | Medium | | Item Thickness | 6 inches | | Item Type Name | Queen Mattresses Medium Firm Mattresses for Cool Sleep Relieving Pressure Relief CertiPUR-US Certified Mattress in a Box | | Manufacturer | FDW | | Manufacturer Part Number | MEM-6K5613-White | | Material Type | Gel Foam | | Mattress Comfort Layer Material | Gel Memory Foam | | Model Name | FDW | | Model Number | King Mattress | | Number of Layers | 2 | | Product Benefits | Our mattress is soft and hard, which can relax your body and mind. At the same time, its outer dust cover can be disassembled, which is convenient for cleaning. | | Product Care Instructions | Machine Wash | | Set Name | King 6 Inch | | Size | King | | Style Name | 6 IN | | UPC | 195030072544 | | Unit Count | 1 Count | | top-style | Gel Top | ## Product Details - **Brand:** FDW - **Color:** White - **Cover Material:** soft knitted fabric - **Fill Material:** Gel Memory Foam - **Item Firmness Description:** Medium - **Number of Layers:** 2 - **Product Dimensions:** 80"L x 76"W x 6"Th - **Size:** King - **Special Feature:** Removable Cover - **Top Style:** Gel Top ## Images ![FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified - Image 1](https://m.media-amazon.com/images/I/81LJRjC1c8L.jpg) ![FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified - Image 2](https://m.media-amazon.com/images/I/41iDqu5DuBL.jpg) ![FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified - Image 3](https://m.media-amazon.com/images/I/81zAA+kR+mL.jpg) ![FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified - Image 4](https://m.media-amazon.com/images/I/61YfSzRHOaL.jpg) ![FDW | 6 Inch King Mattress | Medium Firm | Gel Memory Foam | White | Dual Construction | Pressure Relief, Cooling Foam, Removable and Washable Cover | Bed in a Box, CertiPUR-US Certified - Image 5](https://m.media-amazon.com/images/I/718lJMW4cAL.jpg) ## Available Options This product comes in different **Color, Size, Style** options. ## Frequently Bought Together - FDW 5 Inch Gel Memory Foam Mattress Medium-Firm Mattress for Pressure Relief & Cooler Sleep Mattress for Kid Adults CertiPUR-US Certified Mattress in a Box, King - Hasuit Floating Bed Frame King Size with LED Lights, Metal Platform King Bed, No Box Spring Needed, Easy to Assemble (King) --- ## 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/534456239-fdw-6-inch-king-mattress-medium-firm-gel-memory-foam](https://www.desertcart.jp/products/534456239-fdw-6-inch-king-mattress-medium-firm-gel-memory-foam) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-04*