Amazed at the benefits from using this mat. First thing I noticed was the edema in my ankles, legs and feet. The swelling has diminished almost totally, so impressed. Definitely have less pain from fibromyalgia and osteoarthritis, plus many broken bones and torn muscles. I do have a much better overall quality of life, mentally and physically after using for 6 weeks, but I felt a difference the first time. I was looking for anything to relieve my pain and ordered a mattress cover initially and when I got such amazing results from sleeping on it, decided to order this mat to use while watching TV. The customer service is outstanding and answers any questions you may have. Down to Ground seems to be the best quality product. I have a friend who purchased from another brand and she isn't getting the results I am. Grounding really works, it's not a gimmick, it truly delivers.