Details The Fox Racing Speedframe Pro KLIF Helmet has earned Virginia Tech's best rating (5 STARS) in its Bicycle Helmet Ratings program. Designed with input from pro mountain bike athletes, this top-tier open-face mountain bike helmet offers a market-leading feature set including MIPS™, an easily adjustable multi-position visor, and a 360-degree fit system. The pro version is equipped with a Varizorb™ dual-density EPS liner, Fidlock® SNAP helmet buckle, and an XT2® antimicrobial comfort liner. Construction Mips® equipped MIPS™ added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and redirecting energies and forces otherwise transmitted to the brain Dual-density Varizorb™ EPS provides improved protection by spreading forces of impact across a wider area 41% EPS, 20% nylon, 31% PC, 5% POM, 3% polyester Fit 360° Fit System allows you to dial in your perfect fit every ride Goggle compatible, 3-position adjustable visor Fidlock SNAP helmet buckle provides quick and secure entry and exit while wearing gloves Ventilation Optimized venting with channeled, in-molded EPS provides efficient cooling Details Removable, washable XT2® liner is antimicrobial and manages odor while wicking moisture away from the head Helmet Size S = 51-55cm / 20.1-21.7" M = 55-59cm / 21.7-23.2" L = 59-63 / 23.2-24.8" Weight 380g Size Medium Fox Racing Speedframe Pro KLIF Helmet