Calvin Klein Boxer Shorts. 3 pack boxer shorts, Medium rise waistband with logo design, 95% cotton, 5% elastane. Machine washable. Calvin Klein is an American premium fashion house which produces high end fashionable menswear including Jeans, Underwear, T-Shirts, Sweatshirts, Joggers and Shorts. Calvin Klein is a famous underwear brand which has the iconic CK brand logo.