Well built and keeps my coffee very hot. While not spill proof but spill resistant this cup does a great job. I wish it held more coffee but at the same time I had to make sure it would fit in my smaller sized drink holders in my Corvette. This cup fits perfectly.

Excellent choice to keep your drink hot or cold for long periods of time. I loved it so much I purchased two.

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.

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.

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.