The Fluid 2.0 has a sleek slimline shape that is perfect for stand-up paddlers. It is less bulky, easier to repack, and more comfortable to wear with its 3D mesh padded comfort panel and soft waist belt with buckle cover. Pull the cord and the CO2 cartridge immediately activates, releasing a life jacket from the pouch. Just put it on over your head, it is tethered to the belt pack around your waist so it won't float away. The Fluid 2.0 packs are type III USCG approved life jackets so it???s legal either worn or carried on board. Size: Adult Universal (30" - 52"). Min. buoyancy: 26 lbs. 2 oz. User weight: More than 80 lbs (16 yrs and older).