The Bell Volt helmet - approved at the Tour de France 2008! Combining massive ventilation, low weight, and high-tech comfort features, the Volt is a worthy companion to the riders who will use it..11 frontal air vents corral massive amounts of air with the help of the Volt's custom-sculpted Composite Fiber Intakes (CFI) which directly flow to the helmet's internal Stream Jet Ventilation channels. Rearward exhaust ports and the moisture-wicking X-Static padding work in tandem to help keep the rider cool and dry. The Volt is made even more comfortable by Bell's new Twin Axis Gear (TAG) fit system that allows riders to both dial in the exact fit as well as adjust the mechanism's horizontal position on the back of the head. Bell used the approved In-molding process to bond the helmet's hard outer shell to its EPS foam layer to provide a sturdier, more solid helmet. The EPS foam is shot into the thin Microshell cap when it is in the mold, thus the name, rather than formed separately and taped or bonded on later. This process was pioneered by Bell and is now the standard for all high-end helmets. In-mold bottom wraps bring a new level of durability, solidity and aesthetics to helmets. By bonding Microshell material to the lower half of the helmet, In-Mold bottom wraps cover what on most helmets is a less durable, exposed EPS foam. Internal Reinforcement: In order to maximize venting and minimize bulk. These composite skeletons fortify helmets the same way rebar makes concrete stronger. This allows for bigger, better vents, more advanced styling and lighter weight, while still meeting stringent safety standards. Bell's Cam-lock strap levers make it easy to adjust the straps around your ears. Simply open the cam, position comfortably and close to the lever. Done..Volt is designed to be used on- or off-road. It features Bell's removable Variable Position Visor (VPV) and is well suited for the rigors of a race like the Tour as it is on the singletrack of World Cup XC racing. The visor can be adjusted in the slope of 15°. The plugs are included in delivery..Please measure your head size to get the right helmet size..