The Prime Muscle Tank Top from RBX is constructed with flexible fabric for ultimate comfort and peak performance. X-Dri technology fabric wicks sweat away from the skin to keep you dry and focused on your workout while also forcing moisture to evaporate fast. Fade resistant colors stay bright. Stretch jersey fabric allows for a full range of motion so you can increase your workout performance distraction-free. Lightweight construction reduces bulk and friction for the ideal balance between form-fitting and breathable.