9" ViscoCoil II #628 Twin black duct, medium firm surface feel. The benefit of the ViscoCoil II mattress is the custom-designed supercenter innerspring unit and layers of pressure relieving memory foam. Providing exceptional comfort and support like the best conventional mattress. Memory foam molds to the body in response to heat and pressure evenly distributing body weight. Once the pressure is removed it returns to its original shape. Add Gold Bond's own blend of batting and enjoy a restful night. Mattress easily folds into any futon frame. Available in various sizes and colors.