I purchased these coffee mugs because of the Swell reputation. The length of time that it keeps a product cold or hot is spot on from the advertisement. The one thing I do not like about either of these coffee travelers that I purchased is the drink spout. You flip it up to drink out of it but the part that you flip up is moist from either cold or hot drink whatever is in it. That part is in the way of your drinking and usually will get your face nose or whatever is near it wet. I have to constantly dry that flip part off before I drink my beverage. That’s why I gave it four stars.
One negative about the coffee mug