Product Description Material: ABS plastic & sponge Colour: blue black Product size: 370 * 245mm / 1 4 57 * 9 65in Product function: Spine correction, hunchback / hip soreness improvement Package Contents: 1* Waist Corrector 1. STURDY MATERIALS - The Spinal Deck Back Stretcher is made of environmentally friendly ABS and NBR materials, giving you a harmless and safe use experience while stretching your back sturdily. It will not deform easily even after folding. 2. Effective acupressure - The back massage stretcher arch has 10 magnetic points and 88 plastic needles that bring about an acupuncture effect through deep pressure on specific points. The back stretcher helps activate the natural healing response and improves blood circulation, giving you complete relief from back pain, spinal pain, muscle pain and more. 3. Adjustable stretching levels - The Back Stretcher has 3 height adjustable slots. The higher the back stretcher is raised, the stronger the stretch you will get. 4. Ergonomic design - Based on an ergonomic concept, the contours of the lumbar stretching device conform to standard body curves, providing better spinal alignment and effective acupressure points. The foam cushion in the centre of the lumbar stretcher provides cushioning to ensure your spine feels comfortable. 5. Multiple uses - The Low Back Stretcher can be used while you are lying or sitting. The lumbar stretcher can be placed on a chair to help correct your sitting posture or on a car seat to act as a lumbar stretcher for your car to help reduce fatigue, especially during long hours of road driving.