22 inches helmet sizes lazer Tonic KinetiCore Bike Helmet, Lightweight Bicycling Gear for Adults, Men & Women's Cycling Head Gear, Black Yellow, Small : Sports & Outdoors making it one of the safest helmets on the market Lazer Z1 Kineticore Helmet

Ventilation While the extra coverage of trail-style helmets is more than welcome, it does get in the way of airflow, which can mean a much warmer and sweatier head in hot weather or when youre pushing really hard

Also, Specialized's accessories go a long way toward making this bike so much more useful

Build an Iron Man Helmet for Cheap

top panel lash points and under lid zippered mesh pocket with key clip Internal reservoir sleeve with Hydraclip for easier reservoir hanging Front panel shove-it pocket with stretch mesh gussets Dual front panel daisy chains Dual quick release upper side compression straps with axe/trekking pole capture Dual lower side compression straps Zippered sleeping bag compartment with floating divider Removable sleeping pad straps Dual ice tool loops Stow-on-the-Go trekking pole attachment SPECS SIZE VOLUME DIMENSIONS WEIGHT S/M 2807 IN3/ 46 L 29.13H X 15.75W X 11.81D IN

Winner of Best Wearable Tech Company at SXSW 2014 and easily the most advanced motorcycle helmet on the market, the Skully AR-1 features a transparent floating head up display (HUD) that gives the rider full situational awareness with a revolutionary 180 rearview camera