My Melody stickers sack from Kamio Japan 2011. 

71 pcs of stickers.

+ the card holder is a also a greeting card / small gift card.

Size of the pack is about 3.75 x 3.75 inch.

Size of the stickers is about 1/2 to 2/3 inch.

The stickers are made of paper material.

Rare, vintage and collectible.

So CUTE.