NOTE: Gath Helmets run small. We strongly recommend ordering one size up from the recommended size on the size chart! Please note, this isn't a guarantee, just a suggestion based on reports from customers. If the helmet doesn't fit, you will still be responsible for return shipping charges. Gath SFC Surf Convertible Helmet, designed for the surf, is the lightest helmet available world wide. Its unique fitting system provides an incredibly snug comfortable suction cap fit idea for punching through waves. Gath ear protectors are easily removed to expose the ears - ideal for hot weather - or easily attached, becoming an extension of the helmet shell for added impact protection and extra warmth in cold conditions. Adjustable audio vents allow further flexibility to shut out the cold wind or open to improve hearing. SIZING: Small - Head 21 1/4 to 21 7/8 | 540mm - 555mm American Hat: 6 3/4 to 7 Medium - Head 22 to 22 5/8 | 560mm - 575mm American Hat: 7 to 7 1/4 Large - Head 22 7/8 to 23 1/4 | 580mm - 590mm American Hat: 7 1/4 to 7 3/8 X-Large - Head 23 3/8 to 24 | 595mm - 610mm American Hat: 7 3/8 to 7 5/8 2X-Large - Head 24 to 24 3/8 | 610mm - 620mm American Hat: 7 3/4 to 7 7/8 3X-Large - Head 24 3/8 to 24 7/8 | 620mm - 630mm American Hat: 7 7/8 to 8
