Soft, resilient memory foam cushion is pressure sensitive to help relieve stress points. Smart gel-cooling layer helps provides longer lasting cooling by dissipating heat. Non-slip under-cushion cover keeps the cushion firmly in place on your chair. Long-lasting, fade-resistant fabric cover. Washable. Seat CushionNon-slip undercushion cover keeps the cushion firmly in place on your chair. Back Support Type: Chair; Material(s): Cooling Gel; Fabric; Memory Foam; Color(s): Black; Cover Material(s): Fabric.