Under Armour ColdGear Run Long Running Tights - Large - Black Ergonomic Waistband - Ergonomic waistband delivers greater back coverage for added warmth and protection 4-way Stretch Construction - Improves mobility and accelerates dry time Dual-layer ColdGear - Gives you an ultra-warm, brushed interior and a slick, fast-drying exterior ColdGear - accomplishes the impossible: it keeps you wamr without weighing you down Fabric - Nylon/Polyester/Elastane