Our Natural Wool & Organic Cotton Japanese Shiki Futon Mattress is made in the style of a traditional Japanese futon mattress. This classic design features organic cotton stuffing, wrapped in a layer of natural wool and encased in your choice of either organic or natural cotton fabric.  No foam, synthetic fibers or chemical flame retardants are used in this version of our Shikibuton. Select a mattress thickness of 3 or 5 inches to match your sleep preferences. Handmade by the skilled team in our San Francisco factory.