Smith Signal MIPS Helmet Protection for every ride For riders who take on everything from their daily commute, to a more focused training ride, the Smith Signal MIPS Helmet is designed to offer impressive impact protection, ventilation, and comfort. The Signal MIPS features Zonal KOROYD(R) technology, a honeycomb-like layer that increases impact absorption in a lightweight and breathable package. On top of that, MIPS(R) technology helps to reduce rotational forces during certain types of impacts. The Signal MIPS features 19 vents with Air Evac(TM) technology that increases airflow and reduces fogging when wearing Smith performance eyewear. For wherever your rides take you, the Smith Signal MIPS is ready for the ride. Features Vapor Fit(TM) System lets you dial in the perfect fit, with 270-degree adjustment Zonal KOROYD(R) coverageoffers additional lightweight and breathable impact protection in a honeycomb-like design Air Evac(TM) with 21 vents enhances breathability and integrates with Smith eyewear MIPS(R) Technologyhelps reduce brain injuries from forces caused by rotational impacts Lightweightat only 290g (size M)SPECIFICATIONSCore Material EPSClosure system Vapor Fit(TM) dial Safety Certifications CPSCIntended Use Road, Gravel, Urban Weight290 grams (Size M)Sizing Size Small Medium Large XLHead Circumference (cm)51 - 55cm55 - 59cm59 - 62cm61 - 65cm | Smith | Signal Mips Helmet Men's | Size Medium In Neon Yellow Grips, Black Clamps