Others say...

"Found a good one !!"
I now have two of these 14oz travel tumblers. they are great !! Keep my cold drinks cold for over 4hrs, same with coffee. I highly recommend this Nissan thermos.

"Keeps it hot, and keeps it one-handed"
The 2 most important features of a travel mug for me are:

Keep my coffee hot for a few hours.

I want to be able to open the lid - drinking port with only 1 hand.

This slick stainless steel (in and out) mug meets both of these requirements. My coffee has stayed hot at least 4 hours, and I can easily operate the lid with one hand while driving.

My only complaint is that the flip lid does not make a leak proof seal when closed. So if this mug should teeter and fall (if not properly secured in a cup holder), it will dribble liquid. If not for this annoyance, I would have given this product 5 stars.

"Tumbler leaks horribly!! Don't waste your money"
This is horribly made. Tumbler leaked hot coffee all over when tilted. Is not sealed at all around flap that covers drinking hole. You can actually see light through several areas when holding lid up. Don't know why a company would make a cup that was so well insulated but has so many areas on the lid for hot drinks to leak and for your hot drink to get cool. Would not recommend at all.

"Solid Thermos Mug for the Road"
My wife had gotten me a briefcase Nissan Thermos. It kept the coffee hot BUT was difficult to drink while driving. Instead, I purchased this thermos mug and it has served me well. I can tell that the insulation is not perfect because the top part of the mug becomes warm to the touch, but the coffee stays hot for the 1 hour commute. As the other reviewers have commented, the flip cap can leave coffee on your face if you are not careful. It also leaks a bit at the flip top, but I was not expecting it to be leak proof. It is splash proof, which was what I was looking for. Cleaning is easy. Top is dishwashed. Body is washed with a baby bottle brush (at your local Target, Walmart). There a gray gasket (ring) between the black opening and the metal inside the thermos that needs some extra scrubbing at the seams.

"NOTHING BETTER! I WOULDN'T BE WITHOUT ONE"
What a joy when you find something that does what it is supposed to do pretty much as well as you could ever expect! I'm on my fourth in 20 years and I've only needed new ones because 1 was stolen from my bike, i lost one and Katrina got one. I've forgotten my morning coffee for as much as 5 hours and it was still better than luke-warm when I finally drank it. It will keep your coffee hot all morning. I've had others and none were even close. I wouldn't be without one.