The Under Armour Heat Gear Sonic Womens Embossed Capri Running Tights are manufactured with a lightweight, soft, close, & streamlined fit without the squeeze of compression for extra comfort. The shorts are manufactured with Heat Gear, a fabric that is engineered with Under Armours signature Moisture Transport System. This ensures that sweat is drawn away from the body & out into the air so that it can evaporate, ensuring that you remain dry & comfortable. The fabric also features a 4-way stretch, enabling you to move freely & without restriction. Anti-microbial technology prevents the growth of odour microbes, keeping you feeling fresher for longer. Flat-lock seams create a smoother fit, preventing the risk of chafing & friction that can occur from seams that stand away from the garment.