A medical balloon is provided for which the working surface may be identified during an interventional procedure with enhanced precision. Provided is a medical balloon or balloon parison which comprises a radiopaque material that comprises a radiopaque felt. The radiopaque felt is laminated to a wall of the inflatable body. Also provided are methods of forming a medical balloon. The method comprises applying a radiopaque felt to a tube, extruding the tube to form a parison, and blow molding the parison to form the medical balloon.
