The Smith Mainline MIPS Bike Helmet is made for going big, going fast, or both. This helmet is Smith's pinnacle, downhill certified enduro bike helmet as it features safety innovations like Koroyd and MIPS to provide energy-absorbing impact protection, so you have the confidence to get aggressive on the trail. The Mainline integrates with your bike goggles for efficient venting and fog-free vision, while its multiple pad sets including liners and neck-rolls let you customize the fit. Land that rocky gap safely with the Smith Mainline MIPS Bike Helmet!