For everything E-bike rides in the neighborhood to snaking singletrack sessions, the Troy Lee Designs Flowline MIPS Helmet adds a healthy dose of safety along the way. A whopping 14 vents help keep our heads cool, while dual-density EPS foam helps manage both small and large impacts. A MIPS liner adds even more impact protection with its proven ability to decrease the amount of rotational forces transmitted to our brains in a crash.