Features: The 3-level stretcher and extender desgined to make stretching your back easy, safe, affortable and enjoyable. It helps to relieve lumbar pain in the lower back and correct postual imbalance. Made of very tough ABS plastic, it features 3 different settings to relieve pain in the lower back due to tight muscles, excess flexion and poor spinal alignment by stretching and extending muscles and ligaments. Simply use for 5 minutes, twice a day for optimum results. Just lay it on the floor for you to stretch, bed when you rest, or even attach to a chair when you're sitting for long hours!   Working Function:Elieve chronic back painCompact, lightweight and portableCorrect postural imbalancesRestore the natural curvature of the backImprove flexibility in shoulder and back muscleLower back pain // Lumbago // Cervical SpineProlapsed Intervertebral Disc (PIVD)   Package: 1X Back Stretcher