The utilizes a 4-way stretch neoprene and thin, super-soft foam to keep the vest snug to every contour of your body. The Team Vest incorporates an "X" shaped segmented back panel to give the skier 360° of mobility when stretching to reach the next ball. The Glideskin upper panels help wick away water and keep the vest light.• Not a U.S. Coast Guard Approved Life Jacket• Thin profile, 4-way stretch neoprene• Front zip with no straps or buckles to get in the way• "X" shaped rear panels for increased mobility• Glideskin upper helps wick away water• Contoured arm holes• Men's Chest Sizes: S(32"-36"), M(36"-40"), L(40"-44"), XL(44"-48") Glideskin upper panels help wick away water Contoured arm hole Not a U.S. Coast Guard Approved Life Jacket | Men's Team Neo Vest