When searching for a "thin wallet" online, you'll inevitably come across attractive numbers like "8mm thick" or "ultra-thin 5mm." However, it's important to note that many of these numbers refer to the wallet when it's empty.
When you actually use a wallet, have you ever had the experience of "the snap won't close when you put a card in" or "it bulges out unsightly when you put coins in"? A truly excellent thin wallet is one that is designed to maintain its thinness and ease of use even after absorbing "everyday belongings" such as 10 bills and 6 cards.
Both the 3rd and 4th generation Tenuis wallets are designed to hold a lot of cards and coins (regardless of whether they are permanent or temporary), and there are no strict limits on the number of cards or coins you can carry. While it would be physically impossible to exceed the limits, you can fit 8 regular cards, 2 in the hidden pocket, and even use the coin pocket as a card slot on the 4th generation wallet.
Don't get distracted by numerical specifications, but rather, figure out the capacity you need based on your lifestyle - for example, do you prefer bills, coins, or cards - and carefully imagine and research the silhouette of the wallet once it's packed. This is the first step in choosing a wallet you won't regret.