Equipped with 88 massage protrusions to match your body's acupuncture points, massage lower back while stretching. Three different levels can be adjusted to give you the perfect experience. It can be used while sitting to help correct sitting posture, massage the waist, correct posture imbalance, and restore the natural curvature of the body. back. Improves flexibility of shoulder and back muscles. Made of high quality ABS material, it is environmentally friendly, hard, shatterproof, pressure resistant, compact and portable, and designed to be placed in a suitcase. There is a soft rubber pad in the middle to cushion the impact and protect the waist. Easy to use, adjustable and portable, you can use it however you want. This machine is small in size and lightweight, and equipped with multi-level back stretching device to help you relax and instantly relieve back pain caused by muscle tension, excessive bending and misalignment spine. You can lie down and relax for five minutes twice a day. The rear stretcher is designed to stretch your back easily, safely, economically and comfortably. An intimate gift for family and friends. Three-speed adjustable massager First gear 7cm from the floor suitable for beginners Second gear 9cm from the ground suitable for adaptation Third gear 11cm from the ground suitable for long-term use Three-speed base, adjustment three-speed, two holes for carrying straps Package includes: 1 * spine stretcher Pay attention: Due of manual measurement, please allow slight dimensional tolerances Lighting in photography may cause chromatic aberration compared to real life