Supple-Rest 3 Features Cotton Velour wrap around zippered cover over 3 layer 8.5 inch thick core. Not inexpensive innersprings. Top layer is 3 inch Polylux bio-based viscoelastic memory foam. Middle layer is 2.5 inch conforming bio-based foam. Bottom layer is 3 inch orthopedic firm bio-based foam. Zippered Cotton cover can be removed for washing to keep you bed clean and sanitary.
Government mandated flame retardant chemical based flame barrier is zippered and removable for access to inner components and layer system.