attwood Avenir Sport SAS Fully Upholstered Boat Seat Attractively patterned Avenir Sport SAS spring suspension seats are 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. All upholstery is marine-grade vinyl. Each seat includes corrosion-resistant T-nuts for attachment to seat pedestals. Seats include corrosion-resistant T-nuts for attachment to seat pedestals. Available in a variety of colors. Avenir Sport with Flip-up Bolster is ideal for applications where the boater needs the additional 7" of seat height for better vision during slow speed maneuvering or when the boat is off plane and it is difficult to see over the bow.