These are 40 flake stickers of Sanrio Characters:
Hello Kitty, My Melody, Little Twin Stars, Cinnamoroll, Kuromi, Pochacco, Purin, Tuxedosam, Keroppi.
Size of the stickers is about 1/2 to 2 1/4 inch, mostly around 2/3 to 1 1/4 inch
The stickers are made of plastic material.
You will get the stickers shown on the picture.525