[Premium Japanese Craftsmanship] Each item is meticulously sewn to provide our customers with "peace of mind" and "comfortable sleep." [High Resilience and Lightweight Solid Cotton] This material distributes body pressure evenly, prevents sinking, and supports proper sleeping posture. [Mightytop] Ideal for clean mattresses, especially for those who sweat at night. [Three-Tiered Structure] The three-layer futon with firm cotton offers well-balanced support for the entire body and is gentle on the lower back. [Polyester Hard Cotton] Polyester hard cotton is known for its firmness, making it an ideal material for mattresses.