Ever since its inception in 1968, Calvin Klein has stood for minimal chic: simplicity with luxurious details, clean lines that make a modern yet timeless silhouette. CK is also known for its denim and underwear ad campaigns, which over the years have proven to be enormously successful, launching the careers of spokesmodels like Brooke Shields and Mark Wahlberg. The collection Calvin Klein Naturals is a line of men’s underwear made with 100% USDA certified organic cotton.