Description Product Description 1.which work like acupuncture by pressing deeply on specific area, helping loosen up the tight muscles. The thickened design of the foam cushion provides maximum protection and comfort for the sensitive areas of the back spine. 2.Back Cracker Board for Pain Relief : Spine board provides physical stretching, acupuncture massage and back support for your back, relieving pain in the lumbar, back and sciatic nerve. It can also help to correct postural imbalance, the best solution to maintain the natural curvature of the back and stabilize the spine in daily life. 3.Adjustable Design : The back popper has 3 adjustable settings for use so that fit for ages and ability. You can fix this lumbar support stretcher at the most comfortable level for easy stretching and effective pain relief. 4. Perfect Gifts for Loved Ones : Get posture therapy, back pain relief, deeper sleep, and improved mobility with the back stretcher, designed to help you enjoy your life.