The NRS Oso PFD is a basic, medium profile life jacket for recreational kayakers and rafters with a ventilated, thin-back design for comfort with any type of seat. The Oso is a Type III, medium profile PFD delivering 16.5 lbs. of flotation. The thin back construction distributes the PlushFit™ foam flotation more broadly to reduce bulk and improve the fit. Five-panel design conforms effortlessly to your body's shape, following your movements as you paddle, row, fish or swim. Features two large zippered pockets for on-the-water essentials, 3M® reflective accents, shoulder strap keepers and a hidden lash tab. Convenient front, zippered entry and six adjustment points for a customized fit. The Oso carries the US Coast Guard Certification through Underwriters Laboratories (UL). Sizing (chest circumference in inches): XS/M: 30-42" - L/XL: 42-52" - XL/XXL: 50-56"