Super love these things.
I have two now. They're a great size and shape, so soft and cuddly, one for your tummy, one for your legs, one for your back when you get in the car... I just like 'em. They stay warm a good 2 or 3 hours I think.  Long enough to fall asleep, watch a movie, or get distracted by the awesome day you're having. Can get hot enough to make you not want to leave it on your skin, even with a few layers of clothes between if you use boiling water. Urn makes nice warm bottles that are more user-friendly.
Rating: 5 stars