Review on 🌟 Acupoint Massage Therapy Ball Set - Perfect for Yoga, Deep Tissue Massage, Trigger Point Therapy, and Myofascial Release Physical Therapy Equipment - Effective for Back Relief and Foot Plantar Fasciitis by Michael Cox

I bought these to use on my legs and back. After two or three uses on the legs, the balls became very soft and lost their shape. For exercise therapy, you need to use balls that don't change shape for this to work. I can't even fold them now because they are pancake shape. In my opinion, the material from which it is made must be significantly harder so that the ball does not lose its shape. My dog is interested in it so it will probably be a toy for her from now on as she is a Great Dane. By the way, I'm not heavy and didn't push much, I'm only 126 pounds, foot size 6.5. Photos attached