Product DNA Go-to gym shirts built with fabric that dries fast to keep you cool, while the streamlined fit cuts out bulk. It's also part of the UA MK-1 system—gear that all works together to keeps you ready for any training situation. HeatGear® fabric is ultra-soft & smooth for extreme comfort with very little weight Mesh back & underarm panels deliver strategic ventilation 4-way stretch construction moves better in every direction Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbe Style #: 1356774 Shaped hem 90% Polyester/10% Elastane Imported Style #: 1356774 Shaped hem 90% Polyester/10% Elastane Imported