Design & Technology: Mountain bike helmet designed to feel tailor-made for your head MIPS(R) Brain Protection System reduces rotational forces caused by angled impacts to the head for added protection AirEvac(TM) ventilation system integrates with Smith(R) goggles and eyewear for fog-free vision VaporFit(TM) dial adjustment system offers 270deg fit adjustment with the turn of a dial Lightweight, low-bulk single layer webbing 20 fixed vents offer consistent airflow Performance comfort lining Integrated visor offers added coverage Outside channels let you easily store your sunglasses when not in use Designed for total integration with Smith(R) performance eyewear and goggles for increased comfort, venting, and convenience Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older AS/NZS2063 certified Weight: 11 oz. Style: CONVOYMIPS