These are a must buy if you love having warm drinks and you are time poor. I have both the easy clean and the standard model, I love that you can put them in your bag and not worry about spills. They keep drink hot for about an 1-2 hours and then the temperature lowers after that but not too much (coffee is still drinkable). I adore them for this reason alone, as I have purchased many other travel mugs and thrown out countless dregs of cold coffee because they were useless. However, I wish contigo would make a coffee press version like the bodum travel mugs. I'm also considering purchasing their tea infuser as well for making chai. These mugs are BRILLIANT!