The Columbia Women's Glacial IV Half Zip Fleece is a versatile base layer top that can be worn for jogging or as a standalone piece. It is made with soft and cozy fleece fabric that provides warmth without adding bulk. The half-zip design allows for easy ventilation, and the mock neck provides extra coverage. The active fit ensures a comfortable and flattering silhouette. Whether you're exploring the outdoors or running errands, this top will keep you warm and stylish.