Combining a side-buckle entry and a smooth, streamlined torso, the Women's Siren PFD gives boaters a life jacket designed for all-day comfort and safety. 400 denier ripstop nylon ensures season-after-season durability. Side-buckle entry reduces the bulk of a zipper. Ultra-soft foam is divided into six independent panels, allowing it to conform to your body and flow with your movements. AirMesh inner panels provide ventilation throughout the jacket. Features padded shoulder straps and strap garages and reflective accents for low-light visibility. Large, front pocket with single-entry zipper and zipper garage to prevent snags. The Ion is a Type III, low-profile life jacket designed with 16.5 pounds of flotation and carries the US Coast Guard Certification, through testing by Underwriters Laboratories (UL).