This is a set of 6 bonbon drop stickers purchased from SHEIN. It was a set product, but since I had another set of the same thing, I'm selling this one because I don't need it. They are not made of a hard material, but are hollow stickers with air inside. The designs are all cute, and I think they are a good product for children's sticker exchanges ^_^ The bird sheet in the lower left corner has only 3 stickers used from the upper left, so it is less full.