Great little product! Easy to move around and make comfortable without drilling holes!
I have had a thumb rest taped on my jazz bass for a year not wanting to take the drill to it. This idea is really great, the material feels dense and solid and the shape is ergonomic and comfortable to play. Really great invention.
It is not possible to use the plungers to stick to a matte surface , so the company has a small piece of contact paper they provide that can allow you to stick your Thumb Fin to a matte surface. I trimmed the piece of contact paper so that it would look more attractive and there wouldn't be a bunch of contact paper sticking out around the sides. Worked well. I am very happy and I have these on three of my bass guitars
I have tendonitis in my thumb from years of playing in a rock band that requires fast pumping 8th notes all night. When I saw this thing, I thought maybe it will help, as when I play a 5 string, and I'm primarily using the 4th string, I use the 5th string as a thumb rest and it seems to give my thumb a break.
I've only had the thumb fin a couple of weeks but so far so good! I found it very comfortable on the past few shows. It'll probably take a few more months to know whether it helps sort out my tendonitis.