A transparent sticker is just like an ordinary sticker but with its background to be clear. So there will be no white border or background color, just only your design on clear sticker.
Most transparent stickers have a self adhesive backing on the back of the stickers, sometimes it will be on the front, which enables you to face mount the stickers to the inside of windows.
Transparent stickers are perfectly fit for packaging of products , or bottle labeling, or any situations that the product background wanted to be seen through the sticker graphics.
For example ,the clear transparent stickers are mostly used for clear window decal, shop front graphics, as its transparent background will not block the view of the store inside, making an outstanding design at the same time.
(Image 1 : a transparent sticker with clear background)
(Image 2: an ordinary sticker with colorful background )