Under Armour Active Seamless Hipster Womens Fit: Compression--Supports your muscles to prevent fatigue during intense training. Performance Technology: Under Armour HeatGear --For when it's hot. HeatGear technology wicks perspiration off your skin, rather than absorbing it. It's engineered with UA's Moisture Transport System to deliver core temperature regulation and maximum breathability. Seamless--Garment is constructed without seams to provide freedom of movement and prevent skin chafing/irritation. Flatlock Stitching--Seams are sewn flat to the garment to enhance durability and prevent skin chafing/irritation. Fabric Content: 93% Nylour nylon, 7% elastane