This isn't your grandpa's long underwear! The Under Armour Base 3.0 Legging delivers heavyweight protection in bitter cold conditions without weighing you down. Rugged 93% polyester, 7% elastane ColdGear fabric dries quickly to keep you light and comfortable. The patented negative grid interior traps hot air to provide superior warmth. Four-way stretch fabrication allows greater mobility and maintains its shape, while ArmourBlock anti-odor technology helps prevent the growth of odor-causing microbes. The Signature Moisture Transport System wicks sweat away from the body to keep you dry. Smooth flatlock stitching and ergonomic seam placement help reduce chafing and allow for easy layering. This fitted pant features a performance waistband and a working fly. Imported.