The Under Armour Threadborne Long Sleeve Seamless T Shirt delivers consistent performance as you train, with HeatGear technology incorporated into its lightweight construction to wick sweat away from the skin and leave you feeling cool, dry and comfortable. It is crafted from a soft knit fabric with engineered mesh ventilation, mapped to areas it is needed most, an almost sew free construction to reduce chafing, a stretchable fabric and Under Armour branding to finish.