Under Armour Women's Base 1.0 Leggings 95% Polyester/5% Elastane Imported Ultra-lightweight UA Base 1.0 is built for higher activity levels or less intense cold Thermal grid fabric traps heat in tiny pockets for long-lasting protection Quick-dry construction wicks moisture to keep you drier, lighter & more comfortable 4-way stretch construction moves better in every direction Anti-odor technology prevents the growth of odor-causing microbes