Gear up for your outdoor activities with the Columbia Women's Omni-Heat Base Layer Top. This top features Omni-Heat thermal reflective technology, which reflects and retains your body heat to keep you warm in chilly conditions. The moisture-wicking fabric keeps you dry and comfortable by pulling sweat away from your skin. The four-way stretch construction allows for a full range of motion, while the flatlock seams minimize irritation. Whether you're hiking, running, or skiing, this base layer top will provide the perfect combination of warmth, comfort, and performance.