Excellent product and phenomenal customer service. Very responsive and totally focused on the customer. I had an issue, emailed the company, and 15 minutes later the President of the company emailed me a response and 20 minutes after that I got a shipping notice for a replacement band. When I got the package, I had an ENTIRE new set! Unbelievable service and a company that stands behind their product. Highly recommend this company and their bands.