Cardboard reinforcement on one side. Please read the profile before purchasing. I do not remember using this item, but there may be minor white spots, etc. Due to amateur storage during childhood, the condition cannot be guaranteed. Shipped via Yu-Packet Post only, will be posted the next day. ○ It seems that there are many losses with regular mail, but after loss, I can't do anything, so you will have to give me a rating (⋆ᴗ͈ˬᴗ͈)” For price negotiations, please read the profile and be sure to state your desired price in the comments.