The original is listed as a density of seven. I imagine that a density of eight would be comparable to a billiard ball.
I bought them for my daughter and she uses them every day. They help reduce the pain. Thank you!
I use the Neuro Ball for foot recovery after long runs. My foot recovery time has been cut in half when compared to just resting/elevating legs. Due to an injury, I have posterior tibialis tendinitis. This routine has helped considerably in my management of pain and rehabilitation.













