Surf To Summit Outfitter Series Kayak Seat (No Pack), Black Built with our proprietary process of layered foam, fabric, and plastic, compression molded at 400 F and 60 tons of pressure 4 point adjustable attachment system for customizable comfort Seat Back: 13"L x 20"W Seat Cushion: 14"L x 16"W x 3/4"H Surf to Summit's strongest longest lasting kayak seats