For the ultimate low profile fit, the 16G Belt Pack is the way to go. This easy to adjust universal size life jacket fits a large range of adults. Its compact design and pillow-style bladder provide a design buoyancy 15.5 lbs of flotation. Pull the ‘JERK’ tab to inflate, then pull attachment strap over head to secure. Use this belt pack in your pack raft, on your SUP, or while racing. The compact size includes two D-ring attachment points and a signal whistle.