Specialized Tactic 4 Helmet More Coverage, More Confidence The newly redesigned Tactic 4 helmet from Specialized builds on the successful Tactic line, with a redesigned silhouette and several key features, bringing this trail helmet to the next level. Extended back-of-the-head coverage on the Tactic 4 gives you the confidence to tackle any terrain, while MIPS(R) Evolve technology and ANGi sensor compatibility are there for you just in case. The Tactic 4 prioritizes ventilation, offering a high level of airflow without sacrificing protection or comfort. A trail helmet that protects you like an all-mountain helmet, while breathing like an XC helmet? Dreams really do come true. Features MIPS(R) Evolve technology provides extra protection from rotational forces during certain types of impacts Round Fit offers improved comfort for rounder head shapes ANGi sensor compatible for extra peace of mind SBC integrated fit system ensures a comfortable fit every timee-Bike certified NTA-8776Lightweight at approximately 350, 380, and 430 grams for the small, medium, and large respectively Integrated sunglasses storage SPECIFICATIONSVisor Yes - fixed Closure system Buckle with adjustable strap Intended Use Trail, XC, AMWeight350g (S), 380g (M) & 430g (L)Sizing Size Small Medium Large Head Circumference (in)20 - 22"21 3/4 - 23 1/4'22 3/4 - 24 1/2"Head Circumference (cm)51 - 56cm55 - 59cm58 - 62cm | Specialized | Tactic 4 Helmet Cpsc Men's | Size Small In Black