I received this spinal massager and returned it. I tried it for 2 days and it did not work. The description of the listing when I bought it was completely misleading. You cannot do any activities while wearing it except sit down or lay in a bed cause of the air pump attached to it that gets in the way of everything. It barely holds air when you pump it and completely deflates when you take the air pump off. I was completely unsatisfied with this massager and so glad I could return it and get my money back.