These days, Under Armour isn't just the place for athletes to get some simple undershirts. Between their expansion into exercise and sportswear of all kinds, and the advent of athleisure wear becoming the comfortable standard, you'll see Under Armour all over, on just about anyone. Proving just how much of an iconic international brand it has become, take just one look at the recently opened Under Armour Brand House Shinjuku. Multiple floors are packed with the latest in sportswear tech, items made in collaboration with celebrities like Dwayne "The Rock" Johnson and Tom Brady, supremely comfy duds, and even limited-edition Under Armour Tokyo souvenirs. With all this plus an actual workout studio open to visitors, we knew we had to take a look!