Review on Misby Coffee Warmer: Efficient Desk Mug Warmer with Auto Shut Off - White by Matt Estrada

I think using borosilicate glass cups/mugs is highly recommended to effectively keep your liquids warm/hot. I love that this heater only stays on when there is enough liquid to weigh it down. Yes folks, it only turns on when your cup is on it. It works based on gravity and the weight of your drink, but since borosilicate is fairly light, especially when it's almost empty, it shuts down. Overall I'm very happy with it. It looks very minimalistic and is very easy to use.