I purchased a Zeez Pebble for my wife, who has always had problems getting a good night's sleep. Unfortunately, the Zeez didn't work out for her but, notwithstanding, I've been tremendously impressed by the support from Zeez. We dealt directly with Anna McKay, the creator of Zeez, and she not only fulfilled the company's promise of a refund but extended the trial period to give us more time. She also worked with my wife on nutritional advice, which was really helpful. I can't speak highly enough of the treatment we received. It seems to me that, for Anna, Zeez is not just a business but a mission to help people sleep better. Hence the five-star rating.