The Under Armour Women's HeatGear Armour Leggings are a popular choice for women's synthetic base layer bottoms. These leggings are made with Under Armour's HeatGear fabric, which is designed to keep you cool and dry during physical activity. The leggings have a fitted design that hugs your body for a comfortable and supportive fit. They also feature a wide waistband for added comfort and a secure fit. These leggings are great for layering under pants or wearing on their own during a variety of outdoor activities, such as running, training, or yoga.