Japan food button stickers sack from Kamio Japan. 

Featuring: bento box, rice ball, soup and others.

35 pcs of stickers; some are button/pvc stickers and some are paper stickers.

Size of the pack is about 4.5 x 4.5 inch.

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

The stickers are made of paper and pvc material.

Rare, vintage and collectible.

So CUTE.