A slim card wallet held together by an O-ring. Created in a rush before a trip to replace a regular wallet.

Holds a minimum of 3 cards, and the maximum only limited by diameter of o-ring you can find.

The rubber ring also acts like a great place to store ticket stubs and cash.

Pictured card holder printed in black PETG, with an 25mm diameter O-ring. That diameter easily holds 3-8 cards.