Don't let a little chill mess with your momentum. Your Women's Brooks Shield Hybrid Vest 3.0 brings the heat-literally-with 120g of lightweight THERMOLITE® insulation that keeps your core toasty without turning you into a walking sauna. Windproof panels block icy gusts, while soft pockets and a cozy collar lining add bonus comfort points. Zip up, stash your essentials, and go. Because winter miles won't run themselves.