Smith Mainline MIPS Helmet - M - Matte Archive Wildchild eBay This tapered design is a

This tapered design is a simple

Clamping diameter/bore: 35mm

Who's this item for: Riders with a compatible Camelbak pack looking for a bit of extra back protection

Fit Type: Relaxed Fit

BUILT-IN DIMENSION: 110 mm Boost

Smith Mainline MIPS Helmet - M - Matte Archive Wildchild eBay This tapered design is aThe Smith Mainline downhill certified enduro bike helmet is fine tuned for comfort and safety. It doesn't matter if you're slaying the EWS in Whistler or suffering through the last stage of your local enduro race, you need a breathable, lightweight helmet that pairs well with goggles and fits like a glove. Speaking of your goggles, fog is not your friend, and this helmet is crafted to integrate with your bike goggles for efficient venting and fog free