Product description Material: ABS plastic & sponge Color: blue black Product size: 370 * 245mm / 14.57 * 9.65in Product function: spine correction, hump / hip acid improvement Package content: 1 * lumbar orthosis 1. STABLE MATERIAL - The backrest of the spine deck uses ABS and NBR material from the surrounding area to bring you harmless and safe experience while doing vigorous back stretching. Will not easily get out of shape even when folded. 2. EFFECTIVE ACUPRESSURE MASSAGE - The back massage stretcher frame has 10 magnetic points and 88 plastic pins that achieve an acupuncture effect by pressing the specific acupuncture points deeply. The stretcher helps activate the natural healing response and improve blood circulation for complete relief of back pain, back pain, muscle pain, etc. 3. ADJUSTABLE STRETCH LEVEL - The back massage stretcher has 3 slots for height adjustment. The higher the rear stretcher is lifted, the greater the stretch. 4. ERGONOMIC DESIGN - Based on the ergonomic concept, the contour of the lumbar traction device is in the standard body curve to ensure better spine alignment and efficient acupressure massage. The foam pad in the middle of this lumbar support provides cushioning so that your spine is comfortable. 5. MULTI-PURPOSE - The lumbar support can be used whenever you are lying or sitting. The back alignment device can be placed on a chair to correct your sitting posture or on a car seat that serves as a lumbar support for the car and reduces fatigue, especially on long journeys.