Ring Leaf is a sticky note part for double ring notebooks that allows you to "connect" printed materials such as cards and documents and memos to the rings of the ring notebook for comfortable holding.
Simply attach the items you want to connect to the sticky note adhesive on the film part and snap the cut part of the part onto the ring.
The adhesive side is sticky note adhesive, so you can peel it off without damaging the paper you have attached.
You can store the pages neatly "like a page in a notebook" without hiding them, and it makes it easy to look back at related papers along with the handwritten content.