The Cling Vinyl will cling on either side, so it can be applied to the inside or outside of a window or other smooth surfaces. There is no glue on it. For best results, spray the surface with soapy water or Windex, apply CV, use a credit card to squeegee out the water, remove any bubbles. CV is removable and reusable.
IMPORTANT NOTE ABOUT THIS VIDEO — You asked for a sticker with a solid background so the stickers we have now, have a solid white background. No longer translucent like in this video.