Patented design provides outstanding pressure redistribution and comfort Unique geometry creates individually responsive cells that reduce shearing and cradle bony prominences Ring-of-Air design helps reduce heat and moisture build-up Weight limit up to 200 lbs. SpecificationsManufacturer: Span America Application: Seat Cushion Cover Material: Without Cover, Polyurethane Cover or Nylon / Vinyl Cover Dimensions: 16 X 18 X 4 Inch HCPCS: E2603 Inflation Type: Non-inflatable Material: Segmented Foam Prop 65: No UNSPSC Code: 42141705 Weight Capacity: 200 lbs. 1 Each / Each