I have a trigger thumb -- last time my other hand required surgery so I wanted to find an alternative. I bought a three sized packet after using the paper guide to determine my size. Immediately, the largest of the three was the right size; I had to figure out whether to use A larger or the smaller end of size 8. I haven't yet figured out what to do when my hands get soapy, other than make sure I don't bend or use my thumb until I can get the brace realigned. Has anybody else found a way to adapt to this situation. Another size won't fit. [I don't know how to provide proof of purchase.]