Stay warm and cozy during your outdoor adventures with the Columbia Women's Glacial IV Half Zip Fleece. This base layer top is made with Columbia's soft and lightweight microfleece fabric, which provides excellent insulation without adding bulk. The half zip design allows for easy temperature regulation, while the mock neck provides extra coverage and protection from the wind. The regular fit and four-way stretch construction ensure a comfortable and unrestricted range of motion. Whether you're hiking, skiing, or simply running errands, this base layer top will keep you warm and stylish all winter long.