Shop for women's base layers shirts for all outdoor activities. Explore Halti’s range of Women's Base Layer Shirts. Functional, versatile, and quick-drying long sleeve and short sleeve base layer shirts are perfect for exercise or layering up for colder days. Our base layer shirts are made of technical and breathable materials to function in all weather conditions. Merino Base Layer shirt is a great option all year round for hiking, skiing or just walking outdoors during the winter season. Check here all women's base layers.