Calvin Klein Inc. (/klaɪn/) is an internationally operating, American fashion house. The company, which became famous for its designer underwear and denim lines in the 1980s, specializes in mass-market ready-to-wear clothing for all genders and age groups as well as leather products, lifestyle accessories and shoes, home furnishings, perfume/cosmetics, eyewear, jewellery and watches in the mid-price segment. Its high-end runway fashion division, which represented the top level of the various Calvin Klein sub-brands, was discontinued in 2019.