Whether you ride for routine fitness, focused training, or just for fun, the Smith Triad bike helmet has you covered on the road with advanced impact technology and tunable comfort. The combination of Zonal KOROYDA(R) and MipsA(R) help to absorb impacts and rotational forces so you can focus on the ride. Our VaporFit(TM) system lets you adjust the helmet on the fly with the turn of a dial, and the MipsA(R) layer is integrated with the fit system for a snug, cohesive fit that feels great all day. Nineteen integrated vents with internal air channels maximize airflow to keep you cool and your glasses fog-free through any level of effort. Little details like integrated sunglasses storage and a low-profile strap divider make a difference in convenience and comfort on the bike. Protection Zonal KOROYDA(R) coverage for lightweight, energy-absorbing and ventilated impact protection MipsA(R) Brain Protection System reduces rotational forces caused by angled impacts to the head Integrated skeletal structure creates a roll cage for added strength and impact protection Complies with U.S. CPSC safety standard for bicycle helmets for persons age 5 and older as well as CE EN 1078 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 Features 19 fixed vents for consistent airflow Ionic+A(R) antimicrobial lining offers sweat-activated odor control Lightweight, low-bulk single layer webbing Y-strap divider keeps helmet straps flat and close to the face Front and rear eyewear storage channels Weight (Size M, MipsA(R)): 10 oz / 290 g