Natural Cotton and Wool Shiki Futon Mattress

All-natural Japanese shiki futon mattress. Pure and simple cotton and wool mattress. Natural cotton batting wrapped in virgin New Zealand wool. This authentic Japanese futon meets US fire retardant standards by using a natural boron material. Benefits of Wool Superior pressure relief Highly breathable Excellent temperature regulation Hypoallergenic Inhospitable environment for dust mites Naturally mildew and fungus-resistant Removes static electricity The 4-inch mattress is not recommended for Bi-fold futon frames due to the lack of a firm core. Cotton's softness causes undefined edges and will flatten and expand in surface area over time.