Original baselayer – Whether as a base layer or on their own, these women's shorts are made to be extra comfortable and flexible. Innovative sportswear – Super-light HeatGear fabric gives superior coverage without weighing you down, while also wicking sweat and drying quickly. Comfy sports shorts – The 4-way stretch fabric moves better in every direction, and ergonomic flatlock seams deliver a comfortable, chafe-free fit. Stylish and practical – The gym shorts feature a high-rise encased elastic waistband for coverage and support as well as a built-in front pocket. Material and fit – Under Armour Womens Armour Bike Short, base layer running shorts for women. Material: 87% Polyester, 13% Elastane. Fit: Compression.