The Athletic Brand of This Generation. Experience our full line of performance apparel, footwear, outerwear, and accessories for men, women, boys and girls. If you are performance athlete or just looking for comfortable clothing to walk in, Under Amour is for you. There is a wide variety of active wear for men, women, and children. Also keep Under Armour in mind when planning on layering up for the seasons, Under Armour has a line of thermals that will keep you warm while you participate in your outdoor events.