The Smythson Mara Flat Card Holder was the best wallet overall in my larger tested review of the best men’s slim wallets. Here, learn more about why this elegant, refined case was so impressive.

For example, the Louis Vuitton playing cards and their companion leather pouch start at $500 (there's another for $680), while the jump rope, ping pong set, vinyl holder, and music box are $670 ...