Features:Multi-level adjustment of the arch shape can reach a larger range.Equipped with 88 massage protrusions, corresponding to your body points, massage your lumbar spine while stretching.You can use it while sitting to help you correct your sitting posture and massage your lumbar spine.Helps relieve chronic back pain, correct postural imbalance, and restore the natural curvature of the back.Improve the flexibility of the shoulder and back muscles.Made of ABS plastic, environmentally friendly, tough and not fragile, pressure-resistant, compact and portable design can fit well in the suitcase.There is a soft rubber pad in the middle to cushion the impact and give your waist better protection.Three different levels can be adjusted to provide you with better treatment.Relieve back pain, improve posture, increase range of motion and flexibility.Simple and user-friendly, adjustable and portable, you can use it wherever you want.This machine is small in size, light in weight, and equipped with a multi-level back extension device that can help you relax and immediately relieve back pain caused by muscle tension, excessive bending and poor spinal alignment.You can lie down and relax for five minutes twice a day.Doctors, chiropractors and professional athletes recommend and use this back mgaic machine.The back massager is designed to stretch your back, relaxing, safe, comfortable and pleasant.The spine preventive health care device is convenient for treating spine problems at home.An intimate gift for family and friends.Specification:Name: Lumbar spine massager stretcherMaterial: ABS plastic and rubberColor: purple, blue, greenBase length: 385mm / 15.16inMaximum acceptable weight: 250000g / 551.16lbPacking size: 400 x 250 x 30mm / 15.814 x 19 inPackage weight: 540g / 19.05oz Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.