Women's thermal base layers

Lock in warmth from the ground up with these Women's Thermal Base Layers — a matched system designed to keep your body temperature regulated through cold-weather hiking, winter camping, and every demanding outdoor day when the thermometer drops. Moisture-wicking thermal fabric moves sweat away from your skin to keep you dry and warm through active exertion, while the close-fitting design layers cleanly under any outer pant and jacket without bunching or riding up. Lightweight and packable, they earn their place in your pack without taking up meaningful space. A sustainable, foundational cold-weather system for the woman who shows up for the trail in every season.