I LOVE this water bottle!
I use this water bottle daily. And nightly. And it stays hot for hours on end, especially if under a blanket.  Working from home and sitting for hours, I get cold, even with the heat on. I set this on my lap, wrapped in a blanket, and have a whole place to warm my hands! I use it to preheat my bed, and keep my feet warm all night.<br />The bag material is thick and strong, and the "sweater" helps keep it insulated.
Rating: 5 stars