I like the size, etc. The only trouble is the lift up lid is hard to lift up because the lip of lid does not extend out far enough to get leverage. Otherwise very good.

Its terrific. It keeps my coffee hot for many hours and does not link all over my face, like others I have used.
I am really glad i purchased this travel mug.

I really like this MiiR tumbler, it's sleek and functional (keeps my BP coffee hot!). It is a perfect fit in my car's cup holder and has a good hand feel. I had not heard of MiiR before so it was nice to learn about them and their mission. Part of the sale goes to a certain project and you can track that project to see it's impact (there is a "give code" on the bottom of the tumbler). It's pretty cool. This tumbler will be my go-to gift to give this year - my friends can learn about Bulletproof and the MiiR projects.

This is great for travel. No spills at all and keeps my coffee piping hot.