These massage balls are wonderful. They come in three different sizes and are bigger than I expected. The picture makes them look pretty small, but the smallest is almost the same as a tennis ball.
Another reviewer complained about the smell, which concerned me. They DO have a plastic odor to them, but I could only smell it if I had them right up to my nose. Since I don't intend to use them to massage my face, it won't be a problem.
Highly recommend these.