Coincidently, I have a deep bruise on the back of my left thumb and I also have an issue with the joint of my left toe (closest to the body) where there is no longer cartilage. Both of these are so painful, and I have been looking for more niche ice packs. The chance I came across this product was kismet.
I just received it two days ago. I put it in the freezer within an hour. It comes with a bag you can keep them in while they are in the freezer too. I thought this was very helpful. The gloves themselves are nice and weighted/filled with gel. I have relatively small hands, so they are on the large side, but they fit. It fits my foot well, too. I am sure these will fit most people.
Now for my personal experience! One downside of gel packs like a glove is that it will chill areas you might not want to chill. For my hand, the pack is so cold it is painful, but for the target area it is just right. I roll up the rest of the glove and try to only have it touching the area needed until it warms up a bit. For my foot, the cold shock at first was crazy on my sensitive foot. I end up folding it there as well.