I use my SO to carry my cards/cash, that way its not my fault if anything is lost and i have more space in my pockets for knifes (= Nowadays you don’t need a wallet anyhow (=

I’m happy with my super small wallet for 5+ years: https://www.i-clip.com/96/i-clip-original-soft-touch?number=IC_111_R11_C121400

I bounce between a Secrid Miniwallet, Trayvax Summit, Gerber Barbill, and most recently got stuff on sale for to assemble my own Travaxy Summit Notebook which I’ve been carrying. All have been pretty great, and I switch depending on what I might need to carry. All are good for front or back pocket carry with the Secrid and Summit Notebook being thickest but still doable for back pocket. Kind of wish I could mish/mash features between the Summit and Gerber. I like the Summit for the little place you can carry folded up cash but I’ve replaced the webbing with elastic which works better and wish it had an integrated bottle opener. The Gerber is similar in size, has elastic, and bottle opener, but no real spot for cash (though, you could just slide it under the elastic).

I’ve had this saddleback ID wallet for about 10 years. Small, but enough space for everything.

I love my old Saddleback bifold. It was pricy, but it’s still in great shape 10+ years later. It’s also a bit bulky, but that’s by design to keep them durable.