I needed a really good thermos for taking my coffee to work. I brew my coffee at 7:30am before I leave the house and sometimes I don't get to drink it until 10:30 depending on how my day is going. The coffee is still hot through 12:30. After that it is above warm and still very tolerable. The lid comes apart- which I love because I always think about those pesky spots I can't get to in other complex lids. The site says only the lid is dishwasher safe, but I've washed both my husband's and my thermos in the dishwasher plenty of times and have had no issues.