... molded footrest, and an adjustable Ergoform™ padded backrest. Built on a twin arched multi chine hull, the SENTINEL 80X provides excellent stability. Getting in-and-out of a kayak has never been easier. Our unique manufacturing process allows us to include additional flotation inside the hull of all of our sit-on-tops in order to meet or surpass ABYC Standards. This overall process keeps our kayaks lighter than the competition while making them even more solid and buoyant. Built using our patented RAM-X™ materials, the SENTINEL 80X will be around for years of unique experiences fueling stories worth sharing.