The Muse Hard Hat Womens 13/14 Helmet from Bern Weight:19.5 oz. Standards:ABS Shell with Brock Foam Sizing: XS 52-53.5cm, Small 54-55.5cm, Medium 55.5-57cm, Large 57-59cm, Liner: Hard Hat Go All Season: Yes An ABS shell aligned with soft moisture wicking Brock foam for a multo-impact All Season lid. (Hard Hats are designed for multiple lower force impacts & do not meet the standards for action sport head protection.) Do you like to feel protected from the elements & remain focused during sessions? The Muse features Bern's patented visor & All Season liner system. Riders like Megh Pugh & Ashley Battersby like the Muse for it's versatility. Who says a helmet cant be your favorite accessory?