I recently backed a kickstarter for the SlimFold Micro wallet. It’s extremely thin, but made of Tyvek so it’s amazingly durable.
Loving it so far. I’ve been using a minimalist wallet for the last few years, the Slimmy. It’s been great, but the SlimFold micro seems to be an even better solution so far.
SlimFold Micro (left) and Slimmy (right). Now consider the fact that the one on the left has my ID, cards, and cash in it while the one on the right is empty.
My Digitalism 