As we test our grit on grueling skyline courses, we don't have time for gear that doesn't do what it promises, which is why the Drive Jacket is always in our kit. This highly technical piece rebuffs gusts and repels spotty flurries without stifling our microclimate or arm swing, while its mapped, ultralight fill gives us a touch of warmth where we need it most as we race along snowy ridgelines.