Multifunctional Lower Back Pain Relief Treatment Stretcher for Chronic Lumbar Support, Herniated Disc, Sciatica Nerve, Spinal Stenosis, Sedentary lifestyle, cross-legged, incorrect physical movement or may lead to spinal posture imbalance and pain. It's a sweet gift to help your lover, husband, parents, friends and teachers to restore health of fatigued and tense muscle The spine deck is made of high toughness ABS, not easy to deform or break. There are 3 adjustable setting levels and 90 acupuncture points. The spine deck requires consumes no electricity. It's convenient to used at home, in the car, at the gym, or in the office. The foam strip in the middle of the device can provide cushioning, so that you can use it more comfortably. Beginners or those who have sore lumbar spine can add a soft cloth pad or towel when they first start using it to avoid direct contact with lumbar.