I did a quick search and didn’t find anything discussing the Hu Mn Mini. According the the site, it is: A modern minimalist wallet system that blocks RFID signals yet allows users to express their individuality. Simple, slim, purely HuMn.
I stumbled accross it on Kickstarter, and quickly decided I had to have one (make that two). They met the goal, and then some, so the project is a go. They should start delivery any day now.
Here’s the site if you are interested. http://www.kickstarter.com/projects/1127228691/the-humn-wallet-mini