[adjustable in three modes]: lumbar support has three different horizontal settings, which can fully stretch and relieve the pain of back and shoulder muscles, and restore your waist to the normal physiological curve. Spend 5 minutes a day for the best results. [position correction of spinal pain]: this back stretcher has an ergonomic design, similar to the arch of the human lumbar spine, and a unique design of natural traction therapy. [unique acupuncture design principle]: equipped with 88 massage protrusions, corresponding to your body acupoints, massage your lumbar spine while stretching. The surface design of acupuncture can accelerate blood flow by stimulating acupoints on the back, so as to relieve muscle pain and numbness. V [spinal traction]: stretch the spine, prevent cervical spondylitis, correct posture, improve the flexion of cervical spine and the stiffness of shoulder and back muscles, and reduce nerve compression and pain. [multiple application scenarios]: suitable for home use, office, gym, car or yoga mat. It can also be used outdoors to relieve the fatigue and relaxation of the day. Back and waist massager --- a stretching device used to relieve sciatic disc herniation of back pain. This back massager is made of ABS plastic and is equipped with various settings to fully stretch and relieve back pain. It is designed to help you stretch your back in a simple, safe, affordable and enjoyable way. It is used to relieve chronic back pain, correct posture imbalance, restore the natural radian of the back, and improve the flexibility of shoulder and back muscles. 88 massage bumps - massage your lower back corresponding to your body's and acupoints, and stretch at the same time. Level 3 arch adjustment - get longer distance and better treatment. Just choose the one that suits you best and put it on the floor, bed or even chair. High quality ABS material --- unbreakable, pressure resistant, compact, lightweight and portable. It can do many things and can be well stored in the trunk. Specification: Material: ABS plastic rubber Color: blue black, purple black, green black, pink black, blue white, purple white, green white, pink white (optional) three-layer height: 70mm, 90mm 110mm bottom length: 385mm maximum acceptable weight: 250000g - package size: 39 * 26 * 4.5cm package weight: 550G package list: 1 * base 1 * bow board 1 * waist support belt intimate gift for family and friends 3 modes can be placed: waist support has 3 different horizontal settings (70mm, 90mm, 110mm), allowing you to fully stretch and relieve the pain of back and shoulder muscles, Let your waist return to the normal physiological curve. You can adjust it according to your exercise intensity. The acupuncture design principle cited: equipped with 88 massage protrusions matching your body parts, massage your lumbar spine while stretching. The superficial acupuncture design can relieve muscle pain and numbness by stimulating acupoints on the back, so as to speed up blood flow and relieve muscle soreness. Ergonomic design: the back massager has ergonomic design, which allows you to stretch your spine to prevent cervical spondylosis, improve cervical flexion and shoulder muscle stiffness, reduce nerve compression and relieve muscle pain.