The Onyx M-16 Belt Pack Manual Inflatable Life Jacket has a unique design that keeps stand-up paddle boarders (SUP), anglers, boaters, and other paddlers safe without compromising movement. 16 gram CO2 charge provides 17 lbs. of buoyancy the oral inflation tube can be used to provide additional buoyancy up to 26.5 lbs. when fully inflated. Extremely low profile. 1 buckle and body belt. D-ring attachment for small accessories. 200 denier nylon oxford protective cover. Approved for persons 16 years of age and older; and over 80 lbs. U.S. Coast Guard Approved Type V Life Jacket / Personal Flotation Device PFD with Type III Performance. SIZE: Adult Universal ? Fits 30-52 chest; up to 52 waist.