Sero Standard Deluxe Pressure Cushion made from Top Grade 50 superior foam we guarantee high performance and durability. The integral pockets allow air to circulate enabling heat to disperse, while the high profile foam helps eliminate numbness and relieves pressure points. Indispensable during the natural healing process. They are all one size with varying cut-outs and are suitable for the home, office and travelling. The zipped polyester cover is hand washable.