This premium replacement boat seat is sewn with UV and abrasion-resistant polyester thread and boasts 30-oz. marine-grade vinyl to stand up to all the elements. It is constructed with a water resistant molded foam base, an integrated lumbar support for prolonged comfort, and a heavy-duty design featuring high-impact polypropylene. This seat has been a preferred choice with top U. S. boat builders for years and features a patented no-pinch hinge with an automatic fold-down locking tab for trailering and running. A universal seat bolt pattern is molded into the frame to accept any 5. 25 inch x 5. 25 inch mounting system or pedestal. Stainless steel mounting hardware with Loctite patch is included. Ideal replacement for helm seats, pedestal-fishing seats, ice shelters, duck blinds and even mobility scooters. Includes (4) 1/4 inch - 20 x 1 inch stainless steel hardware.