Mattress, free-end coil construction. Regular support. Non-sag edges. No side sway. Inner support. Felt-padded ticking outside border. This product is a FPI/UNICOR priority item. Federal customers may purchase this product after obtaining a waiver from FPI/UNICOR. Please refer to the FPI/UNICOR Waiver Request Procedures at http://www.unicor.gov Type II, Fed. Spec. V-M-96. 53in.x75in.