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The Mainline is Smiths fully DH certified lightweight full face MTB helmet. Built for the rigours of EWS racing the Mainline is designed to be as lightweight and breathable as possible and still meet the full DH level of protection. In order to do this Smith have used Koroyd throughout the Mainlines construction. Originally developed for the aerospace industry Koryd can absorb more impact energy than traditional EPS Foam whilst also weighing less and offering greater breathability. Smith have also fitted a MIPS system to the Mainline to further increase its protection levels. The Mainline also comes with multiple pad sets to let you customise the fit of the helmet to your head. So whether youre a serious racer or just want a bit of extra protection on your enduro rides or uplift weekends the Mainline gives you all the protection you could need in a lightweight and comfortable package. Pair with Smiths Squad goggles for the perfect fit and widest field of view.