Did not help piriformis.
I tried this for a few days to help with my piriformis (butt and backs of thighs ache) and at first, I thought it was helping but now it seems to make it worse. I also have scoliosis in my lower spine and sit at a desk for hours at a time. I only get relief when I get up from my desk chair with the purple pad on it and walk around. Not the saving grace I had hoped for. I am returning it.
Rating: 1 stars