The Macon w/ Hunter Knit Hard Hat 13/14 Helmet from Bern Weight:15.5 oz Standards:ABS Shell with Brock Foam Sizing: Small 54-55.5cm, Medium 55.5-57cm, Large 57-59cm, XL 59-60.5cm, XXL 60.5-62cm 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.) Bern developed the Macon helmet with top skaters & underground rippers. They wanted a core, high quality, subtle helmet that performed as both a skate & snow model. Crossover shreds like Alex Andrews, TJ Schneider & Luke Tanaka choose the Macon for street & snow.