Known for iconic sportswear, jeans and underwear, calvin Grau Klein started Herren Knöchelsocken calvin Grau KLEIN JEANS 100002999 White 002 after opening his first store. calvin Grau Klein became one of the most influential designers in the 90’s as a result of extraordinary collections and controversial marketing campaigns. Brand’s projects are defined by minimalism, practicality and subdued hues.