Promotional products: Microfiber screen cleaner for electronic devices. Microfiber screen cleaner for electronic devices. Sticks to the back of your phone / PDA / MP3 player and can be used time and time again making your message loud and clear. Adhesive backing that doesn't leave residue. Adhesive quality restored by rinsing with water. Reusable- making it less wasteful than other cleaning products. Comes with stock card. 1" x 1" cleaner, card is 3.8" x 2.1". Please allow 3-4 weeks for delivery after proof approval.