Review on Flexfixx Peanut Massage Ball Back Roller - Dual Function Mobility Lacrosse Balls for Deep Tissue Massage, Myofascial Release, Neck and Pressure Point Therapy by Brokencyde Greer

THESE BALLS ARE GREAT FOR BACK KNOT! At first I thought I received an inoperative set, but I didn't understand that it was a ball and "nut". Singe Ball is PERFECT for tight knots! I use it almost every day! "Peanut" is great for legs and back pain. I like using them on the wall and they are light enough to carry around in my purse. They glide much better than a tennis ball and because they are solid (or at least appear to be solid) I find they work much better with back knots!