Smith Mainline MIPS HelmetSmith Mainline MIPS Helmet Give credit where credit's due. Thank your mum, your legs, and your gear for giving you the opportunity to land that rocky gap. Made for going big, going fast, or both, the Smith Mainline is their pinnacle, downhill certified enduro bike helmet. Safety innovations like KOROYD and Mips provide energy absorbing impact protection so you have the confidence to get aggressive on the trail. It doesn't matter if you're slaying the