The men's Brooks Momentum Thermal Vest has 100 gm insulation that locks in warmth, while the zoned breathability prevents overheating. The vest features a durable water-repellent (DWR) shell fabric that easily wards off light rain and snow. The higher collar is designed to keep the chill out, and the vest offers ample storage with zippered hand pockets lined for warmth and an internal stash pocket for smaller items. Stretchy thermal side panels add mobility and enhance breathability.