Built for high-speed, adventurous mountain bikers, the Sweet Protection Bushwhacker 2VI MIPS Helmet provides the protection and confidence needed to crush any trail in our way. Sweet Protection's 2vi Technology uses a 4-piece shell construction for superior impact protection, and they take it even further by adding MIPS Air technology to help reduce rotational forces. To ensure we have the perfect fit, we easily adjust the integrated 360 Occigrip Fit System and the magnetic Fidlock buckle.Built for impact protection during high-speed mountain biking2vi and MIPS Air technology help protect in the event of a crash360 Occigrip Fit System and Fidlock buckle ensure a secure fitAdjustable visor blocks the sun and stores goggles when not in useSTACC ventilation helps keep your superficial temporal arteries cool?? WARNINGWARNING: This product can expose you to chemicals including Bisphenol A (BpA), which is known to the State of California to cause reproductive harm. For more information go to www.P65Warnings.ca.gov.Shell Materialariable elasticity injection molded shell, multi-density EPSImpact ManagementMIPS AirVentilationSTACCFit Adjustment360 Occigrip Fit System, Fidlock buckle systemVisoradjustableCertificationsComplies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and OlderClaimed Weight[medium/large] 430gActivitycross-country, enduro, downhill, trailManufacturer Warranty2 years