Here in Japan, we have a custom to exchange a card in the mid-summer saying "Good wishes in this hot summer" for years. The weather is really hard to survive, the heat and high humidity!!
Here I found some cute stickers of the summer greeting. Goldfish is one of the symbolic animal for the summer. Very popular during the season and you see it everywhere you go, on postcards, ads, magazines, books, etc. Cute, eh?
Have a great summer days, girls!