FeaturesSeat and back combination in one convenient piece Unique segmented fins are specifically engineered to address the effects of shearing, and to assist in proper body positioning Patent-pending design has two distinct zone orientations to reduce shear in multiple directions The cushion is thicker in the lumbar area, and under the thighs to resist patient sliding down in the chair Designed for wheelchair use, can also be used in office chairs, spectator seats, trucks and cars, etc Wipe-clean, non-skid cover attaches easily to chair SpecificationsManufacturer Span America Application Seat / Backrest Cushion Combination Color Blue Dimensions 16 , 18 and 20 Inflation Type Non-inflatable Material Foam Prop 65 No Weight Capacity 300 lbs 1 Each / Each