1、Made from durable EVA foam interior and 600D oxford fabric outer. 2、Extra thick seat and backrest foam padding supports long-term water sports. 3、4 adjustable front and rear straps serves for most kayaks and boats, fixing the seat in place firmly. 4、Detachable storage bag for your personal belongings. 5、Can be used for sit-on-top kayak, canoes, inflatable Kayaks, some SUP paddle board that have strap attachment points and other boats. The foam filled seat brings unparalleled comfort. High back design and contoured padded backrest provides more reliable support for your back and butt. Great for a long-term water sports. Features: Made from durable EVA foam interior and 600D oxford fabric outer. Extra thick seat and backrest foam padding supports long-term water sports. 4 adjustable front and rear straps serves for most kayaks and boats, fixing the seat in place firmly. Detachable storage bag for your personal belongings. Can be used for sit-on-top kayak, canoes, inflatable Kayaks, some SUP paddle board that have strap attachment points and other boats. Note: No Kayak. Specifications: Material: EVA + Oxford cloth Color: Black + gray Type: Seat only / Seat + bag ( optional ) Seat Size: 46 * 39 * 34 cm / 18.1 * 15.4 * 13.4 in Seat Weight: 1.15 kg / 2.5 lb Bag Weight: 300 g / 10.6 oz Package List: 1 * Seat 1 * Bag 1 * Seat 1 * Bag