Perfect for kayaking, the Dio High Back personal flotation device is built with an easy zip and go entry and 6 points of adjustment for a customized fit. The high foam back fits comfortably in kayak seats, while stretch mesh cargo pockets provide storage for your gear and essentials.. . This product will be shipped directly from MTI and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. . . Ripstop fabric shell. Padded neoprene adjustable shoulders. Back foam panel clears the highest kayak seat backs. 6 Points of adjustment. 2 Large cargo pockets with key keeper. Reflective trim and tethered safety whistle. USCG Type III. Buoyancy: Minimum 16 lb. 5 oz., Design 18 lb. 2 oz..