The removable gel bag in this foam cushion is not only comfortable, moulding to your shape for great support, but will help to keep you cool too. The removable cover is reversible; one side is easy-clean black polyester and the other a luxurious, soft fleece fabric. The Gel Comfort Cushion is ideal for year-round use in the home or car and can also be used on wheelchairs. Cover can be machine washed at low temperature.