Enhanced flex underarm mesh vents increase ventilation and range of motion Dual communication wire access openings in side seams conceal and contain wires Permanent Nano Fluid technology repels fluids which bead up and roll off the fabric keeping you dry and comfortable Dual-access chest pockets have top and side utility compartments for added storage Boasting enhanced performance, functionality and fit, the Tek3 Short Sleeve shirt is a daily uniform thats purpose-made for the occupational athlete. Thoughtfully designed, the Tek3 combines stitched-in creases that provide a classic military look with advanced innovations that allow you to perform your best while keeping you comfortable.