Maintaining a leather wallet is similar to maintaining a leather jacket or shoes. If it gets dirty, you can spot clean it with a damp microfiber towel. To maintain the suppleness of the material, it's also recommended to use a natural, colorless leather conditioner instead of a color-based shoe polish.

Not only is a slimmer wallet easier to carry in any pocket, but it can also improve your posture. Carrying a thick wallet that only fits in your back pocket can throw off your posture when sitting down. While it may seem minor, years of bad posture can have negative long-term effects.

RFID stands for Radio Frequency Identification. It's essentially wireless technology that allows a reader device to track or receive data. While credit cards do have RFID chips, there's very little evidence to show that criminals are using RFID readers to access your personal or financial information (data leaks and breaches are the bigger issue). While security experts say there's no harm in protecting yourself with an RFID-blocking wallet, the short answer is that you probably don't need it.