509 Altitude Snow Helmet Size:3XL Boot shape provides long-lasting comfort

Boot shape provides long-lasting comfort and incorporates ergonomic toe box construction for greater compatibility with bike's controls

Minimal seams insled-contact areas

Using Medium Arm Side Clamps:

Padded construction and profiles on the upper part have better flexibility and reduce material wrinkles

509 Altitude Snow Helmet Size:3XL Boot shape provides long-lasting comfortOne of the industry's bestselling helmets ever, the 509 Altitude series excels across four key principles: safety, performance, fit, and style. Revolutionary design means precision fit and sleek profiling that exceeds the competition, plus innovative venting and all day comfort for aggressive riding. The 509 Altitude Helmet features the Fidlock magnetic strap buckle for easy one handed operation, plus customizable elements like a removable cold