The O’Neill Reactor Vest is designed with anatomical flex points and expansion panels for a comfortable fit that will keep you skiing all day. This vest is made from closed-cell PVC marine foam and has a soft 100% polyester lining and Filter Tech outer shell. Segmented foam core and anatomical flex points keep you moving freely. Features concealed dual belt system with quick-release buckles and heavy-duty front zipper. USCG approved type III. Sizes: S(33″-36″), M(37″-40″), L(41″-44″), XL(45″-48″), 2XL(49″-52″), 3XL(52″-55″). Filter Tech outer shell and soft polyester lining Segmented foam core keeps you moving freely USCG approved type III Men’s Reactor Life Jacket in Black size 3XL.