Smith Engage Mips Bike Helmet | REI Co-op。NWT Accidentally purchased the wrong one. Big berms, rock gardens or flowy rollers. No matter the trail, get after it with confidence in the Smith Engage mountain bike helmet. Zonal KOROYD™ complements Mips® for energy-absorbing impact protection in the event of a crash. A dial adjustable fit and extended back coverage provide a locked-in feel. On hot days or exposed climbs, 21 fixed vents and our AirEvac ventilation system keep you cool and comfortable. Channels on the front make it easy to stow eyewear and a two-position visor rotates up for on-the-go goggle storage. Product Details Protection Lightweight in-mold construction, Zonal KOROYD® coverage for lightweight, energy-absorbing and ventilated impact protection Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older as well as CE EN 1078 Fit / Integration Adjustable dial fit system for a customized fit 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 Features 21 fixed vents for consistent airflow Performance comfort lining Lightweight, low-bulk single layer webbing Two position adjustable visor Weight (Size M, Mips®): 12 oz / 350 g