Tesa Powerstrips Poster Are Double-Sided Self-Adhesive Strips For Poster Fixation. They Allow Hanging Up A Poster Without Damaging The Surface Of The Wall Nor The Poster Itself. Since They Can Be Removed Anytime Without Leaving Any Visible Traces, They Are Ideal For Damage-Free Hanging And Far Superior To Using Conventional Thumbtacks. Use Them For The Permanent Or Temporary Display Of Charts And Illustrations In The Office Or Enjoy Them As An Invisible Means To Display Decorative Posters At Home. Not Suitable For Use On Styrofoam, Foamed Material, Surfaces With Non-Stick Coating, Porous Materials