I bought these for a vacation in Okinawa, but it was cloudy the whole time (lol), so I ended up never using them and just putting them away. They're in almost-new condition, so they're very beautiful. They're SWANS, and they come with a sturdy case, so they're a good item. Purchased for over 10,000 yen. I think they're probably for children around the age of 4 to 9 (kindergarten to 3rd grade).