Can be used to help correct postural imbalance. With 88 acupressure massage points, which can press different points on the body. Made of long-service PP material, non-toxic and harmless. Perfect gift for family or friends. Four-level design, adjustable different stretching methods can exercise your back health. With 10 magnets to press lumbar acupoints to relax lumbar. Compact and lightweight, you can use it at home, office, or travel