We designed our Queen Size 3 Inch Organic Cotton Shiki Futon Mattresses for anyone seeking a supremely comfortable but firm mattress filled with USDA Certified Organic Cotton. Our Traditional 3 Inch Cotton Shiki Futon Queen Size Mattresss are firm when used with a traditional tatami mat. This Shiki Futon is Ideal for last minute guests, camping mats, and kids rooms. No matter what size you choose each mattress is designed to last a lifetime when taking proper care. Cotton is a natural, renewable, biodegradable and sustainable fiber. Cotton breathes, so it stays cool, is never itchy, and it's an outstanding insulator to provide warmth in the summer & heat in the winter.