Smith Accel Helmet MIPSSmith Accel Helmet Blue sky and high speed groomers in the alpine or a storm day spent chasing fresh tracks in the trees, the Smith Accel helmet is the only helmet you need. It balances the latest impact protection tech with 360 fit adjustability and one hand adjustable vents for all day comfort in any weather. Mips and Zonal KOROYD work together to absorb impacts in the event of a crash. It's the lightweight do it all helmet you can count on no