Twenty fixed vents for consistent airflow, lightweight, with a three position adjustable visor, and with the VaporFit™ dial adjustment system for a custom feeling fit the Smith Engage Mips Helmet is a mountain biker’s dream of a brain bucket. This helmet features the MIPS® Brain Protection System designed to reduce rotational forces caused by angled impacts to the head, a feature you definitely want in a bike helmet, and a lightweight in-mold construction for a helmet that’s CPSC and CE EN 1078 certified. Smith describes the Engage as “designed for ultimate integration with Smith performance eyewear for maximum comfort, venting and storage convenience.” What they mean is they’ve added the AirEvac™ ventilation system they perfected in their ski helmets, a venting system that integrates with Smith goggles and eyewear to move air up and out from between your face and the lenses for fog-free lenses even when you’re running hot. A sweat-wicking liner helps keep you cool and comfortable and fights odors, so you’ll end the ride with at least your head smelling decent. We can’t speak for the rest of you. The three-position visor rotates up high to allow for goggle storage when you’re done playing in the dust and mud. A great helmet for the rider looking for serious venting against summer heat, a visor that’s adjustable, and a fit system that feels like it was made for you.