I received the Ion Mug with Charging Coaster for free from Home Tester Club in exchange for my review. This mug is exactly what I needed. I drink my first cup of coffee fast but my second cup I always sip on. This mug is perfect for keeping my coffee hot while sipping. I like everything about it. The only thing I would change is to make the mug hold more. It holds about the same as a normal coffee cup. It'd be nice if it was a bit bigger but overall I love it and have recommended my friends and family to try it.