Happiness Lunch stickers sack from Pool Cool Japan. 

Featuring: sweets, food, panda, bear, etc.

71 pcs of stickers.

Size of the pack is about 4 x 4 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.