Mainline Mips Color:Matte Royal Navy / Summit The BOA® Fit System lets

The BOA® Fit System lets you easily secure and adjust your fit with one hand

Spherical Technology allows the outer liner to rotate around the inner liner during a crash and also eliminates contact with a hard-plastic slip-plane

Coaster brakes are simple and intuitive for kids to use—they just pedal backwards to stop

Part Number: 10032

Mainline Mips Color:Matte Royal Navy / Summit The BOA® Fit System letsGive credit where credit's due. Thank your mom, 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 our 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 EWS in Whistler or suffering