The Columbia Women's Midweight Stretch Long Sleeve Top is a versatile base layer that is perfect for outdoor activities. It is made with a blend of polyester and elastane, providing a comfortable and stretchy fit. The Omni-Wick technology wicks away moisture, keeping you dry and comfortable. The thumbholes on the sleeves offer added warmth and coverage. Whether you're hiking, running, or skiing, this top will keep you comfortable and protected from the elements.