The Nut'Z is a little stunner in the Lazer range with modern styling & integrated brim along with Lazer's own patented Autofit system. The Autofit system is an automatic fit system that delivers equal & constant tension by eliminating the need to manually adjust helmet retention: simply pull the helmet on, & the front & rear baskets of the helmet will adjust themselves to provide a great fit. A Crazy nut shell can also be bought separately to quickly change the look of this helmet.