Posture correction: Lumbar support with soft rubber mat in the middle, cushions impact force, better p redection of the waist, preventive care of the lower back and posture, helps correct and improve posture.^ 94 massage contacts: Back support with 94 massage contacts, simulation finger massage, acupuncture touch, corresponds to your bodys acupuncture points, massages your lumbar spine during stretching.^ Multi-level settings: The 3 settings and the angle of the back arch can be adjusted to meet the requirements of waist exercises. Made of high-quality ABS (acrylonitrile butadiene styrene) plastic, environmentally friendly, durable and unbreakable, pressure-resistant.^ Easy to use: Choose the level suitable for your body and train your back in a healthy way to better eliminate the cause of back pain. The back stretcher helps you release your lumbar and back tension after a long day.^ Easy to carry: Arc stretch for lying and sitting. Let your waist return to its normal physiological curve of 26 degrees. The back carrier is lightWhiteht, can be easily taken when travelling or simply enjoyed at home and in the office. The best gift for the elderly and friends.^