Description Made for great days on the bike and the daily commute alike, the Smith Signal MIPS helmet gives you the protection you need no matter where your wheels take you. MIPS brain protection system helps reduce angled impact forces in the event of a crash, and an adjustable dial on back lets you fine-tune the fit for comfort. Strategic venting keeps the air flowing, your glasses fog-free, and your head cool. And whether you’re grabbing a coffee or walking into the office, engineered eyewear channels make for convenient hands-free glasses storage. Protection MIPS® Brain Protection System reduces rotational forces caused by angled impacts to the head CPSC and CE EN 1078 certified AS/NZS263 certified Fit / Integration Designed for ultimate integration with Smith performance eyewear for maximum comfort, venting and storage convenience AirEvac™ ventilation system integrates with Smith eyewear for fog-free lenses VaporFit™ dial adjustment system offers 270-degree fit adjustment with the turn of a dial Size Small: 51-55cm Size Medium: 55-59cm Size Large: 59-62cm Size Extra Large: 61-65cm Features 21 fixed vents for consistent airflow Performance comfort lining Lightweight, low-bulk single layer webbing Weight (Size Medium): 300 g