Review on 🌈 Optimized Color-Changing Cold Drink Cups by Jeff Hill

Media could not be loaded. I'm really impressed with these mugs, at first I was really scared to buy them based on some of the reviews. Some reviews said the mugs didn't change color, but I found all mine changed color. Before using the cup, I pour warm water into it and rinse it, then add ice water into the cup and it changes very quickly. I liked that I can customize them and they do what they say. I definitely recommend it and I will buy more