Not only is this a great travel mug, but it works awesome just the cup itself. It literally keeps my drink hot for an extended period of time. As a mom to a 1 year old, a mug that keeps my coffee hotter longer is definitely a plus!

Very Good Travel Mug, nice design

This cup has held up well. Keeps coffee hot for a few hours and its a perfect medium size for cup holder and the amount if coffee. Its easy to clean. Very happy!

I use this tumbler for drinking hot coffee, both at home and while traveling in my car.The outside is constructed of plastic with a rubberized bottom to keep it from slipping when placed on a surface. The inside is made of stainless steel. It has milliliter markings up the inside wall in increments of 100. It goes up to 470, which is equal to 16 oz. It has a semi-transparent lid with an arm that is flipped back and forth into an open or closed position. The arm can be locked into either position so it does not move around. When locked in the closed position, it appears to be sealed and airtight. I turned it completely upside down while filled with hot coffee as a test and nothing leaked out.The only minor issue I have is that when the tumbler lid is in the open position the plastic seal faces outward and touches my nose when drinking from it. If you go from a closed to an open position that seal is usually wet from the beverage or the steam coming off my hot beverage. I have learned to wipe it before drinking from it to avoid getting any beverage on my nose.Overall, this tumbler does what it is supposed to. I like the stainless steel interior, the way it seals and how it keeps my coffee hot for hours.

I was quite surprised at the quality of this tumbler, coming from a brand I was not familiar with. The tumbler is well made, the lid fits and seals well, and it holds temperature nicely! Works great for my morning coffee. Fits nicely in my cup holders. I would definitely recommend this tumbler.As a test, I placed 203Ąă water in the tumbler, attached the lid, and checked back at 1 and 2 hours. At 1 hour, the water was at 181Ąă and at 2 hours 165Ąă.