A stack (10) of removable transparent lenses (15) which consists of two alternating optically clear material (20) in intimate contact. The materials are a plastic lens (15) and a clear adhesive (20). The adhesive is uninterrupted. The lens and the adhesive have a refraction mismatch of less than 0.2. The lens stack (10) can be used as a graffiti stop. The lenses are resistant to scratching.
