Overall this is a great Thermo. I found that it keeps the water hot for good amount of time but you do need to pay attention to the top. You have to make sure it’s snug when you close it. Another thing I’ve noticed is when I first pour it the water shoots out do to the pressure from the heat. This is something you can’t avoid but after the air pressure leaves your good, just have to be carful not to spill hot water everywhere. Overall I’m happy with my purchase and the top makes the pouring experience really easy!