Souther Souther Waterproof Boat Seat; Size: 11.8 x 14.2 x 1.2 inches (300 x 360 x 30 mm); Material: EVA waterproof; Comfortable boat seat that reduces impact when riding. Recommended boat cushion for boats with Tiller handle like the Souther 395, 370 etc. Compared to traditional cushions sold on the market, it is thin and slightly firmer so you can use it without feeling fluffier or unstable even when using it. The seat is waterproof, so it is comfortable even when wet. Even if the water is dropped, it is safe to use. Reduces the burden on the lower back and other areas of rough water.