+1 to the Bellroy micro sleeve. Carries exactly what I need, and nothing more: 3 slim pockets for ID, credit card, and debit card. 1 or 2 bills. It can technically hold more but I feel like that defeats the purpose of this wallet. Fits into any pocket, stays out of the way. Things like insurance cards or membership cards I carry as photos on my iPhone Notes/iCloud. I've used my debit card maybe twice in the past three years, so I would really like to get rid of that somehow, but I begrudgingly acknowledge that once in a blue moon I'll need cash or the credit card brand won't be accepted or it trips a fraud alert.
Using a rubber band is more work and with a money clip I worry that it'll scratch other pocket contents. I have yet to find another leather sleeve wallet that is as low profile and small square area as the Bellroy's, but I'm open to change. $65 is a lot of money for 4 credit card-sized rectangles of leather stitched together, but if it lasts me 8 more years then it was worth it, especially since no one else is making this style.