The Columbia Women's Glacial IV Half Zip Fleece is a top-rated base layer top that combines style and functionality. Made from 100% polyester microfleece, this half-zip top offers lightweight warmth and softness. The half-zip design allows for easy ventilation and temperature control. It features a modern fit and comes in various colors, making it a versatile addition to your wardrobe. Whether you're layering it under a jacket or wearing it on its own, this Columbia fleece top is a great choice for any outdoor activity.