ProX XSA-B2X4W LUMOStage 2 Ft X 4 Ft Padded Seat Cushion (White)The ProX XSA B2X4W is a White Vinyl Upholstery Removable Waterproof Seat Cushion for 2 pcs of 2 ft X 2 ft LUMOStage modules. Manufactured with commercial vinyl material and foam padding over a plywood base that drops into the LUMOStage module in place of the translucent white plastic top. The corners have a small radius to help prevent vinyl damage. Each cushion measures 24" x 48" on the outer edges and is approximately 2 1 2 inches thick. To utilize