I am currently packing one of these in my (sometimes) EDC, which has a SWAT-T tourniquet, Quickclot, gloves, and duct tape (or chest seal).
But I have been looking for something even smaller to make it a consistent part of my EDC. I came across these guys the other day and I have one on order. It looks about the size of a fat wallet, and if it is it will become part of my EDC.