The Nutz comes with modern styling and integrated brim along with Lazer's own patented Autofit systemAutofit system is an automatic fit system that delivers equal and constant tension by eliminating the need to manually adjust helmet retention: simply pull the helmet on, and the front and rear baskets of the helmet will adjust themselves to provide a great fitIn-mould (1-piece) construction16 cooling ventsAdditional Crazy nut shellz can also be bought separately to quickly change the look of this helmet check out our full range of exciting colours and stylesWeight: 280 g for a uni-size youthSize: Uni-Size Youth 50-55 cm