Deluxe Thicken Padded Kayak Seat Our canoe backrest seats are made of durable UV-resistant neoprene+600D polyester,internally filled with EVA foam+PE plate which offers more cushioning than other kayak seats.Marine-grade material offers you excellent waterproof effect; Skid resistance of the thick foam cushion can support long-term water sports and for all day comfort. Ergonomic Backrest and Detachable Storage BagAbout this cushioned back support,high back desigh and padded supports your back and butt, it is in line with ergonomics and provides incredible comfort in your water trip.Form-fitting design for all body sizes, large and small. It can also attach to compatible rowboats and fishing boats. Perfect for adding additional safety and comfort.sit in kayak seat. 4 Adjustable Straps with Solid Marine Grade Brass Clips4 adjustable front and rear straps designed with marine grade brass connecting snaps which are solid,durable and rust-proof in seawater,allow you to clip the seat easily to your kayak and fix it in place firmly.4-way adjustable mounting straps gives a wide range of adjustability to accommodate most sit-on-top kayak,canoes,inflatable Kayaks,some SUP paddle board that have strap attachment points and other boats Easy And Fast InstallationThis padded seat is easy to install and removal, fasten the connecting snaps of the straps on the attachment point of the kayak or boat, and then make appropriate adjustments, and the upper straps fine tune the position of the back panel, just like the seat adjustment in your vehicle, it's important for your long-time water activity.