Tough, lightweight HeatGear® fabric, with all the performance benefits of UA Compression. Stretch-mesh back & side panels deliver strategic ventilation. Updated ergonomic design keeps seams off high abrasion areas & increases durability. Material wicks sweat & dries really fast. Mock neck construction for added coverage - Style #: 1369606. 79% Polyester/21% Elastane. Imported - Wash garment inside out. Machine wash cold with like colors. Use only non-chlorine bleach when needed. Tumble dry low. Do not iron. Do not use softeners. Do not dry clean.