Under Armour Lady HeatGear Sonic Capri 80% Polyester, 20% Elastane HeatGear Fabric - A lightweight fabric that is manufactured with a Moisture Transport System, wicking sweat away from the body so you remain dry, cool, light, and comfortable. 4-Way Stretch Fabrication - Provides freedom of movement, comfort and durability. Anti-Microbial Technology - Prevents the growth of odour-causing microbes to keep your gear fresher, for longer. Smooth Flat-Lock Seams - Smooth seaming increases garment comfort inside and out, leaving you with a more streamlined feel and an improved fit. Wide, Flat-Front Waistband - Provides a comfortable, restriction-free fit.