These are Collect flashcards. They are unused and have been stored, but they are bent due to the long storage period. I think it should be fine if you bend them in the opposite direction. There are 5 new packs, but I can also include a partially used pack with about 20 cards if you don't mind. Product information, see below: Amazon.jp https://www.amazon.co.jp Information Cards 5x3 Blank C-531