Spec-Ops brand T.H.E. wallet J.R. for me. I have the larger T.H.E. wallet, too, but found that I don't need something that big. Both these wallets require a large pocket and won't fit in the back pocket of some jeans.
I've been using a Grip6 without the finger ring or leather overwrap. It's thin, RFId safe, and robust. Holds enough for my uses.
I made this one two years ago. slim leather wallet by juan pedro almeida, en Flickr IMG_20210627_192611 by juan pedro almeida, en Flickr
