It is an in-line ad unit that appears in between contents of a page. Users are encouraged to scroll up in order to experience the ad format fully!
How it works
The ad unit allows 2 to 3 frames change which is totally controlled by the user. The first 2 frames work as a teaser for the ad, while the last frame would be the full display of the ad – if it’s a video, it’ll start playing on the 3rd frame.