The back stretcher has 98 massage points which work like acupuncture by pressing deeply on specific area helping loosen up the tight muscles and relieve chronic back pain. It can also help to correct postural imbalance, let the spinal return to the natural. The back cracker board is a home treatment for herniated disc, sciatica nerve, spinal stenosis, , tight knots, excessive flexion and more! Lightweight and portable. Great for use at home, at the gym, in the car or at the office chair. It has 3 adjustable settings for use so that fit for all ages and ability. You can fix this back popper at the most comfortable level for easy stretching and effective pain relief. Get posture therapy, back pain relief, deeper sleep, and improved mobility with the back stretcher, designed to help you enjoy your life.