L.L.Bean Camp Futon, Single,3 Inch Wool Shiki Futon California King Size,J-Life All-Natural Japanese Futon,Natural Wool & Organic Cotton Shiki Futon Bed - Shikibuton Japanese Futon Mattress - 3 or 5 Inch - Soft,Amazon.com: Japanese Futon Mattress, Made by Craftsman (Fabric: Oda Wazarashi Japanese Gauze Cotton, Filling: Organic Cotton 100% Semi Double : Home & Kitchen