Bell Trace MIPS Helmet Performance for all For those riders who don't let one single discipline define their cycling, the Bell Trace MIPS is a versatile do-it-all helmet for every rider-the seasoned veterans and newcomers alike. The Trace MIPS is packe with a high-performance set of features to take your cycling to the next level. For added safety, built-in MIPS(R) Evolve technology uses a slip-plane design to provides essential protection from rotational forces during certain types of impacts, while a durable fusion in-mold polycarbonate shell has the durability to tackle everyday rides. The Sweat Guide(TM) brow pad design redirects sweat away from your eyes, and an Ergo Fit(TM) fit system with an oversized rubber dial makes fit adjustments quick and precise, even while wearing gloves. The Bell Trace MIPS offers high performance without limitations. Features MIPS(R) Evolve Technology uses a slip-plane design to reduce rotational forces on the brain during certain angled impacts Ergo(TM) Fit system features a large rubberized dial for easy, precise fit adjustments No-Twist Tri-Glides makes fussing with strap positioning a thing of the past Sweat Guide(TM) helps to keep moisture from dripping into your eyes by redirecting it away from eyewear SPECIFICATIONSCore Material EPSClosure system Ergo-Fit(TM) Dial Safety Certifications US CPSCIntended Use Fitness, Adventure, Commuting Weight N/ASizing Size Small/Medium Medium/Large Head Circumference (cm)50 - 57cm53 - 60cm Head Circumference (in)19-5/8 - 22-1/2"20-7/8 - 23-5/8" | Bell | Trace Mips Helmet Men's | Size Extra Large In Matte Black | Rubber