You might have a few screws loose, especially if you blast down the mountain mid-blizzard without the small-to-medium Twisted Goggle keeping your vision clear. Blowing snow and blinding sun would force you to slow your ludicrous speed if you didn"t have this goggle"s flexible frame forming to your smaller-sized face. Once on your head or over your helmet, this goggle"s vented lens stays clear and blocks all UV rays to help you see all the bumps and ruts amid your race to the base. Product FeaturesFrame Material: O Matter (urethane)Polarized Lens:Helmet Compatible: yesEyeglass Compatible: noVentilation: top ventsFace Size: small, mediumGrip Strap: yesRecommended Use: skiing, snowboardingManufacturer Warranty: 1 year