Troxel Sport Helmet - White

ASTM/SEI certified. Lightweight, ventilated safety helmet. Features 7 cooling vents and a removable washable headliner. Weight: 13 oz. Helmet Sizes: X-Small = up to 6-5/8 (Up to 20-7/8")Small = 6¾ - 6-7/8 (21 1/4" - 21-5/8")Medium = 7 - 7-1/8 (22" - 22-3/8")Large = 7¼ & up (23-1/8" & up) See Troxel Sizing Guide