Do bills need to be folded to go into the bill compartment of the Card & Coin Wallet, or can they be inserted unfolded?
This question is to check in advance how bills are stored, as small-sized wallets often require bills to be folded.
It is designed to fit a Japanese JPY 10,000 bill snugly, so you can insert bills unfolded as they are without having to fold them separately.
It is sized to fit a single 10,000-yen bill snugly[1]. You can choose to insert bills unfolded without having to fold them. A common concern when using a small wallet is the hassle of having to fold bills two or three times, but POSTALCO's Card & Coin Wallet is sized to fit in your hand while its compartment is structured to let you insert bills fully unfolded[2].
There is not much extra margin left inside the compartment. Because it is designed to fit a 10,000-yen bill precisely, rather than stuffing bills in a thick wad, it leads to a concise hand movement of neatly sliding in the few bills you need[3]. This standard seeks to reduce wallet bulk while maintaining the convenience of handling bills unfolded.
The amount of extra space when inserting Korean won bills or foreign currencies, which have different dimensions from Japanese bills, has not yet been confirmed.