My mat arrived in a timely manner via UPS. It was in good condition and easy to set-up and use. The construction of the mat is high quality and made to last. The controls are good and can easily be set to a comfortable heat. The heat is very relaxing and seems penetrate as opposed to being a surface heat. I have recently come down with a form of sciatica that is requiring further medical treatment. At this point all I can say is that using the mat is very relaxing and soothing. I will update this review as my experience dictates. I am happy with this purchase and may even but a knee mat for my wife.