Delivery will be handled by Sagawa Express. The product is new. ※This product is for double beds. Please check the size. 【Washable!!】 Not only the outer cover but also the core material can be easily washed with a shower at home, and it dries in about 30 minutes, so you can keep it clean at all times without attracting dust mites, mold, or house dust. 【Excellent Pressure Distribution!!】 The three-dimensionally intertwined ultrafine fiber structure supports the body from all directions, evenly distributing body pressure. It solves problems such as bedsores and lower back pain. 【Outstanding Breathability!!】 More than 90% of the core material is air, providing excellent breathability and preventing stuffiness. Furthermore, it excels in air insulation, creating a comfortable sleeping environment that is cool in summer and warm in winter. 【High Resilience!!】 The mattress smoothly responds to body movements with its high resilience, allowing for easy turning over and eliminating unpleasant rustling sounds, supporting natural sleep. 【Recommended by the Japan Atopy Association!!】 Due to its characteristic of being inhospitable to dust mites, 'E-CORE' is certified as a recommended product by the Japan Atopy Association. It is perfect for babies and children with sensitive skin or weak immune systems. 【For Preventing Bedsores in Nursing Care, etc.!!】 The core material, which is a three-dimensional combination of fused spring-shaped polyethylene resin, allows for appropriate pressure distribution so that the body's weight is not concentrated on one part, and it is used as a pressure-distributing mat to prevent bedsores in nursing care settings. In addition, its unique high-resilience structure allows for easy turning over and sleeping in a stable posture, making it easier to relieve fatigue and preventing the lower back from sinking too much, which is also effective in preventing lower back pain and pelvic misalignment. 【Excellent Durability!!】 A major feature is that it can be used comfortably without sagging even after long-term use, unlike conventional mattresses, due to its excellent resilience. In fact, the "Repeated Compression Test" conducted by the Chemical Substances Evaluation and Research Institute showed a low thickness reduction rate (6.7%) and excellent resilience (97.0%). ・Delivery areas are Honshu, Shikoku, Kyushu, and Hokkaido. (Delivery is not available to Okinawa and some remote islands) 【Size】 Body dimensions: Width 140 x Length 198 x Thickness 5 (cm) Weight: 9.4kg 【Material】 Core material: Polyethylene (three-dimensional mesh structure) Core material cover: Polyester (beige)