Under Armour's famous ColdGear base layers are designed to keep you warm, dry, and light. This fitted legging is made from quick-drying, 4-way stretch, 7.25-oz. 96% polyester, 4% elastane. The warmest UA base layers available, heavy-weight Base 4.0 garments offer ultra-warmth for "brutally" cold conditions. ArmourBlock anti-odor technology helps reduce unpleasant body odor. Ergonomically placed flatlock stitched seams offer ultimate mobility and comfort next to your skin. Fitted. Imported.