I passed my test!!!! Got the good news today. Start work on Monday!!!! I think it's super easy to use and a great way to make sure you pass your test. Like everyone's said, just make sure you have it at the right temp.but all you have to do it microwave it for about 15 sec then keep the handwarmer on it and i just put it in my pants and it kept it at 98 for the 50 min car ride there and the 55 min wait in the waiting room. Have a great weekend everyone:thumbsup::smokin: