Bing Bong is the tritagonist from the 2015 Disney/Pixar film Inside Out. He is the imaginary friend of Riley Andersen that exists within her mind.
 
This bookmark measures approximately 9-3/8" tall by 2-7/8" wide.  It is made with a combination of various weights and colors of card stock.  All of my bookmarks have a design on the reverse side which adds to their sturdiness.
 
Be sure to check out Fear, Joy, Sadness, Anger, and Disgust, as well as my other bookmarks, each available separately,