XL Twin-size mattress measures 80 x 39 x 3 inches L x W x H Pressure Relief Medium Firmness - Great for Side Sleepers and Back Sleepers Japanese Floor Mattress, Futon Mattress, Shiki Futon Shikibuton, Foldable and Portable Made In USA Natural Latex and Wool Extra Long Twin Shikibuton Futon Mattress Japanese style hand made Wool and Natural Latex Shikibuton mattress. The classic design features an Organic Cotton Fabric Case and a Natural pure Wool Filling surrounding a Natural Dunlop Latex Core. We designed our Natural Latex and Wool Shiki Futons for anyone seeking a supremely comfortable but firm mattress filled with pure Wool and Dunlop Latex. Our Traditional 3 Inch Cotton Shiki Futon Mattresses are firm when implemented with a traditional tatami mat. The 2 Inch Natural Dunlop Latex core provides extra comfort and support. The Shiki Futon Mattress needs to be routinely aired out flipped over and rotated. We recommend placing a coconut coir pad or Tatami mat underneath the mattress while in use not directly on the floor to create ideal airflow and prolong the life of the futon mattress. The breathable and lightweight wool fiber allows for a deeper nights sleep while the natural latex core provides added support and comfort. These wool and latex shiki futon mattresses are designed to be rolled up and stored away when not in use. You can customize your comfort by layering two or more shikibutons on top of each other. This can provide a softer sleeping surface. This Natural Latex Shikibuton Mattress is perfect for last minute guests camping trips and kids rooms. Feel the difference when you sleep naturally. Available with organic cotton ticking for a soft and natural feel.