A catheter assembly is disclosed comprising a catheter and a receptacleenclosing said catheter. The receptacle has a first part and a second part,which parts are foldable over each other. Further, at least one stickyadhesive area is arranged on the surface of one of the parts of the receptaclein such a way that the sticky adhesive area is covered by the other part whenthe receptacle is in a folded disposition, and exposed to the environment whenthe receptacle is in an unfolded disposition.