Smooth rolling.
This is great. I am going to physical therapy right now for knee pain. The physical therapist uses one of these on my thighs and calves. Now I can do it from home (or have my husband help). I like the grips on this. They are very comfortable. The rollers are very smooth and don't balk. It's a perfect size for me to use on myself or for someone else to use on me. Disclaimer: I received this product at a discount in exchange for my honest review.
Rating: 5 stars