Review (5/5): The Extra small was too small so I ordered a ...
The Extra small was too small so I ordered a small which was just right. If your fingers tend to swell, order a size up. Also, if you have any skin sensitivities, don't sleep with it. All in all, as long as I can keep track of where I put it, it works very well. I am having more than 75% less triggering and therefore less pain.