Under Armour Heatgear Achieve Tank - Women'sThe Under Armour HeatGearŪ Achieve Tank features soft and super-lightweight fabric that keeps you comfortable both in and out of the gym. The four-way stretch fabrication improves your range of motion and dries faster. The unique animal print burnout looks cool as it keeps you cool. Semi-fitted fit. HeatGearŪ is best for weather between 75 and 100 degrees. 70% polyester/30% rayon. Imported.