Under Armour MK1 Twist Short - Men'sUPDATE YOUR TRAINING GEAR WITH THE UNDER ARMOUR MK1 TWIST SHORT. FEATURESEveryone needs to update their training gear once in a while. Get started with your update with the Under Armour MK1 Twist Short. The legendary HeatGear fabric wicks away sweat and dries quickly, and the mesh side panels give you great ventilation whether you're on the court or lifting weights.Fitted: Next-to-skin without the squeeze.HeatGear-