The ring for the car key (that came with my item) was glued shut so it was not usable. If you have cards in the pocket slots, they will stick out, bending business cards or preventing a secure closure. Plastic cards will eventually wear away at the leather as they are too tall for the slots. The wallet does not lay flat.  The zippered pocket will hold a small amount of change or an object about the size of a small "Tile." This key case is not big enough to encase a thick car key fob, but if your item has a functioning detachable key ring, and you don't mind the key on the outside, it may work for you. It's possible to snap the key ring the other way, but a key fob would be too big still to enclose in the leather, which came slightly textured, not smooth, on one side.