Just a heads up, not there problem. 6 months old, failed first test after 3.5 months of use and failed every test sense, for a grand total of three. What a joke, as the cs rep says on the phone "There not necessarily made to pass" and "just use it in the tournaments that don't check". Really?? Known hot bat. I wounder if they would cover the med expenses if my kid drills a pitcher in the face.