These stickers are actually not stickers! Electrostatic (The sticker adheres through static electricity. It is automatically attracted by the windows, mirrors and bay windows to which it adheres) and glue-free, theyre easy to place and remove, and leave no traces on your windows. This material does not require glue to adhere to a glass or very smooth surface. HOMESTICKERS For windows can therefore be re-used. PVC Material.The choice and condition of the surface is very important: it must be smooth, shiny, clean and moistened. HOMESTICKERS For windows are not suitable for frosted glass or non-reflecting surfaces.Position the pattern carefully and press it down gently, smoothing it with a squeegee or credit card, starting at the centre of the pattern and moving outwards. When youre happy that there are no more bubbles, press firmly with a soft cloth. You dont have to remove and reposition your HOMESTICKERS For windows when you want to clean your windows or mirrors. You can leave the sticker in place without damage if you use non-abrasive products and a soft cloth.