The Patagonia Women's Capilene Midweight Base Layer Top is a highly rated choice for women's outdoor base layer tops. It is made with Patagonia's Capilene fabric, which is breathable, moisture-wicking, and quick-drying. The fabric also has Polygiene permanent odor control, so you can stay fresh even during extended outdoor activities. The top has a slim fit that layers easily under other clothing and a crew neck design for added warmth. With its versatile performance and eco-friendly construction, this base layer top is perfect for a wide range of outdoor activities.