a. Material: environmental nontoxic pvc; removable; waterproof; pure Color;And can be removed without any sticky residue, but these decals are NOT REUSABLE after removal. It can be applied to any clean, smooth and flat surface. About our vinyl decals... 1.We cut out from only one solid tone color vinyl, second color inside is the color of your wall or surface where you want to apply it. 2.The colors may be slightly different depending on your PC settings. 3 . Size of decal may be a little bit bigger to show you all details Package: Usually includes sticker, transfer film and instruction. How to use 1.Choose a smooth,clean and dry surface. Peel the stickers from the sheet one by one. 2.Position the adhesive on a plane surface without pressing them, so that it lets possibility to withdraw them and reposition again, if needed. 3.If the result is satisfactory for you,stick firmly to the surface pressing the air bubbles outwards. 4.If you have bubbles,take a needle to bore them.