Boxer shorts pack by Levi's, Pack of two, Stock up, Stretch waistband, Button fly. Since creating the first ever pair of blue jeans back in 1873, American label Levi's has gone on to become one of the world's most iconic denim brands but you already knew that. Today, its collection has expanded to include jeans in a range of cuts and washes, as well as shirts, T-shirts and jackets. Look out for the brand's 501 Original jeans, for an all-American, all-you look.