Under Armour Heatgear Charged Cotton Undeniable T-Shirt - Women'sThe Under Armour HG Charged Cotton Undeniable T-Shirt features a unique fabric blend which provides a super-soft and athletic feel for superior comfort and performance. The signature moisture transport system wicks sweat away to keep your skin cool and dry. Fitted. HeatGear® is best for weather between 75 and 100 degrees. 55% cotton/34% polyester/11% rayon. Imported.