Little chance of mangling cards though I suspect it might not be as practical as a traditional folding wallet (I will leave the butt-bump implications without further address). Still, nice craftsmanship.
It has made using 1 piece of solid linden wood. Ideal to use for credit cards, money, id and business cards. It has a grey felt inside, a leather strip to hold the cards, and magnets to hold the cards inside. Its unique id will be written at the backside, and you will recieve a certificate for your edition.