Cortunex Heat Changing Mug - 11 Oz Color Changing Ceramic Mug with Yellow Smiley Face - Unique Funny Coffee Mug Design

Got this for a mug exchange at work. I think it will go over good. Good quality and comes in a cute box

Really cool coffee mug; my girlfriend totally loved it. Wonderful product, good quality, beautiful color effect, and it precisely matched the description. The item was delivered on time, entirely met my expectations, and represents excellent value for money.

This was a gift for a nine-year-old boy. The color changes very quickly and he loved that it went from grumpy to happy.

these are cute.

Made a nice gift

This is one of those items, that depends the batch it is the quality of the product. My works like a charm. I got the one with black and turn yellow when I put coffee on it, everyone that see it thinks its hilarious. For the price you can not complain.

Great for unicorn lovers

I wish to say good things about it but yellow color is not bright yellow like you can see on the picture, shame on you "Cortunex" Company should change pictures from yellow to "mustard" color because that what it is. Otherwise the mug change color from black to funny face. Product is OK, just be aware of the different color that they are advertise.