New Ways to Relax Your Back- No power or battery required - orthopedic back stretcher, the easiest and most effective physical solution for back stretching. Deeply stimulating your back, relaxes tense muscles, relieves back stiffness and promotes blood circulation, effectively helping you relieve muscle pain and revitalize your back after a long day at work.<br> Upgraded 4 Adjustable Levels - Back crunch There are 4 levels of strength, so you can customize the stretch to relieve back muscle pain. From low, medium to high, with a stretching experience of varying intensities, you can choose the level that works best for you. For 10 minutes a day, you will feel relaxed and painless.<br> Lightweight But Sturdy- Our back stretcher back massagers are made of high quality sturdy ABS and environmentally friendly NBR materials, which do not is not easy to deform or break. Excellent tenacity, safe support up to 150kg<br> The soft foam cushion in the middle of the back crunch tool provides maximum protection and comfort for the spine. Weighing only 1 pound, it's easy to take with you wherever you go.<br> Ergonomic Design- Ergonomic curve design, perfectly fit the back curve. Lumbar stretching can help relieve back pain and correct postural imbalances. Lie on it and stretch your waist, relieve stress, stretch your spine, and let your spine return to its natural line<br> Worry Free Month and Friendly Customer Service<br> Tired of bulky devices? stretching your back is the answer. Order now and say goodbye to pain.