attwood Centric Fully Upholstered Highback Boat Seat This attractively patterned Mid-Back Centric seat is trimmed out with backrest upholstered onsert (for deep-tuck styling) and molded polyurethane foam with stapled-in-place upholstery. All upholstery is marine-grade vinyl. The ergonomic contouring comforst and supports the spine and helps eliminate pressure points.Seat includes corrosion-resistant T-nuts for attachment to seat pedestals. The heavy-duty blow moded construction meets and exceeds ABYC H-31 impact standards. All upholstery is marine-grade vinyl. Seat includes corrosion-resistant T-nuts for attachment to seat pedestals. Available in a variety of colors.