3 hours later and it's still hot
There is nothing worse then going to drink you coffee and it being room temperature. This mug eliminates that issue. I put my coffee in there at 8:15am and it's now 11:30am and the coffee is still HOT. The other amazing feature is that it doesn't leak. I mean throw it in you pack next to your computer and don't worry, you won't fry anything and more importantly you will still have hot coffee when you want it. The lid even has a locking feature so you can't unscrew it from the base when you are trying to open the sipping feature. The only thing i wish it had was full handle, but this isn't too bad and it can be clipped on without worrying about it breaking. I can't wait to use it for hiking and ski touring.