It is not easy to take out a book from the packed shelves. Sometimes the books will be damaged, because the friction between fingers and books is too small.
Retaining the original form and function as a bookmark, Bookmark’ can easily help people to take out the book from the shelves just by adding a crease.
The velvet surface of the Bookmark’ increases it’s friction between bookmarks and pages. And the dot design of details suggests the position of the termination when you fold it.