See more product details Trejacur Back Stretcher is a convenient at home back pain treatment and preventative care product.It's a simple, passive way to gently stretch your entire back, helping to eliminate the source of yourback pain and restore your natural back curve.Back Support has 3 height levels adjustment arch for greater reach, choose the suitable level for your body. Help to relieve chronic back pain, correct postural imbalance, restore the natural curvature and improve flexibilityin shoulder and back muscles.Natural traction therapy, according to the unique design of the human body's physiological curve of the spine.Surface acupuncture design, stimulate the back points, promote blood circulation.Easy to use, fit for most car back chairs and against the seat.Save your electricity bill – No power or battery required yet you can still enjoy adequate pressure withyour own body weight.Precautions and usage:Use 1-2 times a day. Use 15-30 minutes each time. According to body capacity, the use of time can bemoderately extended.1.Lay the base and support arch on a secured mat, rug, or carpet with the wide end closet to you.2.Sit with your back to the arch. Slowly lie back onto the support arch with your knees bents. 3.Simple Stretch position relax as much as possible and breathe normally. With your knees bent, res your arms as your sides.