The Onyx All Clear PFD offers easy-wearing comfort combined with dependable peace-of-mind for action near or on the water. Life vest automatically inflates upon immersion, or you can pull the inflation handle. Can be converted to manual-only to suit your water environment. A smart investment in your own personal safety, or the safety of loved ones. Low-profile front-zip closure offers secure fit V-back for added comfort and faster donning 1"w. body belt Coverts between automatic/manual and manual-only inflation One size fits most