The Eco-Support Futon Mattress is designed with three unique features to give excellent support and comfort. The Eco-Support features a 2 Inch layer of 100% Chemical Free Dunlop Latex placed on top of a layer of 733 4? micro Coils. This chemical free Mattress is surrounded with 14-32 lbs. of Humanely Grown American Wool depending on the size for other added benefits such as spring loft and fire safety features. The Eco Support Mattress comes encased with a Chemical Free Pure Organic USDA Certified Cotton Casing.