FDA listed: To deliver the safest, highest quality products to our customers, Zyllion took the extra step to become FDA registered. That means all aspects of our manufacturing and testing are accepted and backed by the FDA guidelines. Zyllion ZMA-14 SHIATSU neck and back massager cushion with heat. Deep kneading and rolling massages at the neck, upper back and lower back help relieve muscle tension and improve blood circulation and also treat upper and lower back pain. Built-in double vibrating motors at the hip relaxes the body and strengthen metabolism. The unique up-down motion of the massage nodes was designed with the concept of somatology. Multiple massage heads work together to imitate real full body kneading and rolling massage with human hands. This massage cushion has three massage variations- full back, lower back and upper back massage-making it versatile and perfect to use in the office or at home. A great product if you're looking for a lower back massager with heat. To ensure complete customer satisfaction, we at Zyllion will always work hard to solve any problem you might have with any of our products. We warrant our retail products to be free from defects in materials and workmanship that result in failure during normal usage. Attach easily to any chair with its adjustable back strap. Benefits – 1. Relieve shoulder pain, blood circulation problem pain, fatigue from excessive and stress. 2. Relax tense muscle. 3. Heating function that soothes aching muscles. 4. Ergonomic design is perfect to use on lower and upper-back, neck, abdomen, calf and thigh areas.