The Impact is our premium deck, built to cope with the wear of professional coaching and tough whitewater. We've used Armortex neoprene to protect the edges from wear and a 9.5 mm shockcord to keep it on your cockpit when it matters. The O-ring seal, a seamless band of grippy neoprene at the top of the waist tunnel, helps keeps the deck in place, even without a twin seal jacket.