Durable high tech ABS plastic material Using thick high tech ABS plastic for durability and longevity. Use ABS material, non-toxic and harmless, tough, reliable quality and long service life. How Does It Work? When lying down on back stretching device,gravity allows the front of your body to effortlessly stretch out and upwards, gently decompressing the discs in your vertebrae. You'll be amazed by how good you feel after just one use! As you get more advanced and flexible, you can adjust the curve on the arch to a more advanced setting, and in no time, you'll be walking taller, and with more confidence as your posture will improve. Tips: ✓1.You may need a pillow beneath your head when lying down for added comfort. ✓2. For beginners, please be slow when lying down and sitting up, and please consider adding a towel or soft cloth on the back. Notes: ✓Using the device 1-2 times a day for 5-10 minutes a session. ✓Levels 2, 3 and 4 should only be used after you are comfotable with level 1.

✓Multi Occasion Use - Just 5-10 minutes a day,the back stretcher device can help you relax the tension in your waist and back. Very suitable for use on office chairs, gyms or yoga mats. ✓4 Level Adjustment - This Multi-level Back Support stretcher has different levels to adjust. Customers can adjust the level according to their body. Beginners or those who have a sore back spine can add a soft cloth pad or towel when they first start using it. ✓More Robust and Durable Back Stretcher - Made of environmentally friendly ABS plastic and is durable. Our lower back stretcher can safely support up to 160 pounds, is lightweight and easy to carry and store. ✓Lightly Compress and Protect Spine with an Upgraded Silicone Pad - While stretching and massaging the lower back, the upgraded silicone cushion can reduce the pressure and tension of the spine. ✓Upgraded Back Stretcher - Our back stretcher has 84 auxiliary massage points. The ergonomic design of spine deck can safely support the back.