The Patagonia Women's Capilene Midweight Crew is a versatile base layer top that is perfect for a wide range of outdoor activities. It is made with a blend of recycled polyester and spandex, providing a comfortable and stretchy fit. The Polartec Power Grid fabric offers excellent moisture-wicking and breathability. The flatlock seams minimize chafing, and the underarm gussets allow for a full range of motion. Whether you're hiking, climbing, or skiing, this top will keep you comfortable and protected.