DESCRIPTION: Cu-Ergo 18" 18X16Memory Foam Seat Cushion --- ITEM DETAILS: This Memory Foam Seat Cushion from Karman Healthcare is excellent for any wheelchair user that is not satisfied with a standard gel or foam cushion. Using the best Memory Foam, this is surely the best aftermarket cushion available to provide more support and comfort. SPECEFICATION: * Memory foam *2 inches thick