When designing the Smith Convoy, we set out to create a mountain bike helmet that felt like it was tailor-made. Turn the dial in back, and the Vapor-Fit system adjusts like a halo around the skull. When it comes to comfort and protection, the helmet ticks all the boxes. It has a MIPS liner system and all the ventilation you'll need through the hottest days on the trail. In addition to easy integration with performance eyewear, it also features outside channels that store your shades when dusk sets in.