Slim Wallet  5 card sliding mechanical snapfit no supports
Free     Thingiverse     senghauser

Slim Wallet - 5 card, sliding, mechanical, snapfit, no supports

This is a design I came up with after seeing an ad for the Groove wallet ...

similar models —

Slim Wallet - 5 card, sliding, mechanical, snapfit, no supports alternatives
Slim Wallet V40
Pentland_Designs