Breathable Inflatable Seat Cushion. Experience unmatched comfort with our Breathable Inflatable Seat Cushion. Why Choose Our Inflatable Seat Cushion?. Unit Quantity: 15.75 x 15.75″ Features: Inflatable,Portable,Comfortable,Pressure Relief,Breathable,Compact,Space Saving,Easy Inflation,Airtight,Heat Sealed,Thin Stitching,Concave Convex Design,360 Degree Pressure Dispersal,Ventilation,Quick Deflation Material: PVC,High-Grade PVC,Polyvinyl Chloride,Plastic Type: Seat Cushion.