The HyperFreak Competition Vest changes the wakeboarding game with a look that changes as you move. Color pops as the neoprene stretches, creating a visual dynamic that looks incredible out on the water. Nytrolite Foam Technology uses low-density polyethylene which is expanded using nitrogen in an exclusive process which cannot be duplicated. Three times lighter than PVC foam, the vest features a closed-cell foam structure that absorbs 15-20% less water. The construction is also approximately 10% more buoyant than PVC which allows O’Neill to use less foam in each vest for greater comfort. Not USCG approved. Sizes: XS(33″-35″), S(35″-37″), M(37″-39″), L(39″-41″), XL(41″-43″).