The Columbia Women's Glacial IV Half Zip Pullover is a cool layering piece that will keep you cozy and toasty this winter season. This comfort stretch pullover is not only stylish and warm but features a half zip front for fast and easy ventilation, and adjustable heat retention, and a stand-up collar. The Columbia Women's Glacial IV Half Zip Pullover is perfect to layer over your favorite shirt or underneath your favorite vest/jacket.