Fitness rides, adventure rides, family rides around the neighborhood. With its quality in-mold Polycarbonate Shell construction and easy, approachable style, the Bell Traverse XL Bike Helmet is an all-around performer that gives you lots of options. The one-size-fits-all ErgoDial Fit System allows for one-handed adjustment- just press a button and turn the dial, simple as that. Totally comfortable, totally cool.