Velvety soft and supple one-piece PVC free Aero-Jet flotation foam with reinforced 420 Denner Rip-stop nylon fabric for maximum durability. Built-in safety whistle pocket with lanyard attached whistle, copilot side grab handles, removable GoPro mount 4-way mount, adjustable velcro radio strap and multi-use D-rings, reflective shoulder back tape, and built-in utility straps, multi-purpose zipper mesh pockets and shoulder straps. US Coast Guard approved a 4-buckle vest and front-zip entry.