Review on Stanley Classic Trigger Action Travel Mug - 12, 16, 20 oz – Hot & Cold Thermos – Double Wall Vacuum Insulated Tumbler for Coffee, Tea, and Drinks – Stainless-Steel, BPA Free by Alvin Siah ᠌

The stainless steel rim heats up - accordingly, there is a loss of heat. The heating of the rim is not significant, but still. But, probably, if you drink from a mug in the cold, there will be something like heating your fingers). The design of the mug is such that the upper part (the lid with the drinking bowl), which is in contact with the lips, is not protected from contamination. In my opinion, this is a drawback, especially in our covid time. The button must be kept pressed while drinking. Not everyone may like it. Be careful and press the button only in the vertical position of the thermo mug, and only then tilt it. Otherwise, there is a risk of scalding, because. boiling water under pressure with premature tilt can go through the button on the fingers. The instructions say so. For children, this design is not suitable in my opinion. The rest of the mug is good, keeps warm. Boiling water after two hours definitely remains very hot. Usually, for a mug longer and not required. If the mug is not full, the liquid in it cools faster. No smells of plastic or metal were noticed, however, I prefer to pour the drink from a thermal mug before drinking. using a drinker only when there is no ordinary glass or cup at hand). For use on the road in the car - a good option.