R.U.Outside Thumbthing - Premium Outdoor Thumb Protector for Hiking, Gardening & DIY Projects | Comfortable Grip Support for Outdoor Activities

I jambed my throttle thumb several time in one day on a ride. I got this to help heal and keep it from happening again. It is awsome. It supports your wrist as well as keeps the thumb from being able to be ripped backwards when you hit a rut or something that causes your thumb to be forced backward. I has a couple of strips sown in along the thumb that give you support and wont let it go backwards to far. The padding on the palm is nice and I was able to fit it under all my gloves. Yes it was tight, but it did fit. One thing I can tell you is I have a medium sized hand and the Large/X Large is perfect. It does take a while to get it comfortable. I broke it in while not riding. I just wore it for a day at the office. It did cut circulation off to my thumb, but I just kept working and flexing my hande and finally it stopped doing that. If they had a bigger one I would get it so I did not have to go through the thumb circulation thing again. If you have big hands, think twice before buying this one. It is awsome, but you might not be comfortable with your thumb not getting blood to it. But for me It worked and got me through my injury period and still let me ride. I still use it when I ride to keep me from having another injury.