Shorts Under Armour Mk1 Short. Shorts Under Armour Mk1 Short. Men's fitted trim shorts from the original Heatgear material are suitable for all sporting activities. The material used effectively dissipates moisture and thus dries faster. With Anti-Odor technology that prevents the growth of odour-causing bacteria, you stay fresh longer. The design of the used Mesh panels helps to facilitate greater ventilation. Wearing comfort helps the elastic waistband with a drawstring to tighten. Side pockets. Legs in length 9 ". Technology: Moisture Transport System (Wicks sweat away from your body to the surface of your clothes, which makes it easier to dry and keeps you longer), Anti-Odor (keeps the upper fresh by preventing the growth of odor-causing bacteria), HeatGear (unique highly breathable material, Fast sweat). Material: 100% Polyester