- High density injection molded - Dual Density Waterproof EVA - 17 open vents for ventilation and drainage - Full surround interior - "S.T.I.F.S" – Adjustable rear "Stay Tight Interior Fit System" - Hard shell ear coverage - 4 sizes in 2 shell breaks - CE EN 1385 Water Sport Safety Standard SIZES: S/M (53-56cm) L/XL (57-60cm)