Wise Clam Shell Style Folding Boat Seat Clam Shell Pro Style, State-of-the-Art, High-Impact Plastic Frames Snap On Seat Cushion with Compression Foam Padding Heavy-Duty 28 oz. Marine Grade Vinyl, Mildew Resistant & UV Treated Height: 18" Width: 19.25" Depth: 20" Seat Depth: 15.25" 6 Year Warranty on Frame, 3 Year Warranty on Upholstery