Stay warm and cozy during your jogging sessions with the Columbia Women's Glacial IV Half Zip Fleece. This base layer top is made with soft and lightweight fleece fabric that provides excellent insulation without adding bulk. The half-zip design allows for easy ventilation and temperature control. It features a mock neck collar for added warmth and thumbholes to keep your sleeves in place. Whether you're jogging in the mountains or exploring the city, this top will keep you comfortable and stylish.