Abstract: Disposable Undercollar—Collar Guard is a disposable self-adhesive hygiene device made from a soft comfortable absorbent odor blocking material that is worn on the inside collar of shirts, jackets, coats and hats that absorbs sweat, blocks odors and keeps them from becoming stained which prolongs the time between trips to the dry cleaner. This shield can be cut to length so that it will fit any size collar or hat.