The Patagonia Women's Capilene Midweight Crew is a popular synthetic base layer top known for its versatility and performance. It is made from Patagonia's Capilene fabric, which offers excellent moisture-wicking and quick-drying properties. The midweight construction provides warmth without bulk, making it suitable for a wide range of activities. This base layer top is highly rated for its durability, comfort, and eco-friendly production practices.