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Under Armour makes you better with apparel, accessories and footwear that boast breakthrough performance technologies.


Prime yourself for peak performance at the gym with the Under Armour Men's MK1 Short Sleeve Top Black. Engineered specifically for training sessions, this short-sleeve t-shirt for men stretches in four directions for a full range of motion and promotes cooler, drier skin with mesh ventilation and moisture-wicking HeatGear fabric.

Orders processed within 5-10 business days. Please note that due to our reduced staff and our busy carriers, delivery times may take longer than usual. See Shipping Policy and Return Policy for details. Shoes may be shipped not in original packaging.