For safety and security, a US Coast Guard approved PFD is necessary when boating or enjoying watersports. O'Neill Wetsuits's R&D process provides the best quality, fit, and functionality in the industry. The Reactor Vest is a USCG Approved Neoprene Type III PFD with minimal bulk design. Segmented foam core constructed with anatomic flex points wraps around the body's shape. Closed cell PVC marine foam. Filter tech outer envelope. 100% polyester lining. Concealed dual belt system with quick release safety buckles. Heavy duty front zipper. Overlock stitched neoprene shell. Expansion panels flex and move with you.