Arch with multi-position adjustment for those with back pain. Equipped with 88 massage projections, corresponding to the body's acupuncture points, it massages your spine while stretching it. You can use it while sitting, helping you correct your sitting posture and massage your spine. Helps relieve chronic back pain, correct postural imbalance, restore the spine's natural curvature. Improves flexibility in shoulder and back muscles. Made of fine quality ABS plastic, environmentally friendly, tough, pressure-resistant, compact and portable design that can be neatly placed in luggage. With a soft rubber mat in the middle, the impact force is dampened and provides better protection for the waist. Three different levels can be adjusted, giving you better treatment. Relieve back pain, improve posture, increase range of motion and flexibility. Simple and user-friendly, adjustable and portable, it can be used wherever you want. It is small, lightweight, equipped with multiple modes, which can help you relax and instantly relieve back pain due to tense muscles, excessive bending and poor spine. You can just lie down and relax for five minutes twice a day. This back massager is recommended and used by doctors, chiropractors and professional athletes. The back massager is designed to stretch your back, simple, safe. Preventive care for the spine, easy to use for home treatment of back problems. A thoughtful gift for family and friends. Specifications: Name: Lumbar Massage Stretcher Material: ABS plastic + rubber Color: Purple, Blue and Green Three level heights: 70 mm / 2.76 inches, 90 mm / 3.54 inches, 110 mm / 4.33 inches Base length: 385 mm / 15.16 inches Maximum acceptable weight: 250000 g / 551.16 lb