As the name suggests, this kind of sticker has the adhesive on the front, instead of on the back like the average sticker, meaning you can stick it to one side of a glass surface to display your design on the opposite side.
Your artwork is printed on a clear material that has the adhesive applied to the same side as the design or logo. This is then laminated on the back to give your sticker extra durability.
This makes a front-adhesive sticker the perfect choice for a window in a shop, a vehicle, or any other kind of window. For that reason, they’re also regularly referred to as “window decals”.