Loved the handle and easy lock/flip lid. I haven't tested it on hot beverages yet as I don't drink coffee, but it does a pretty good job keeping my cold beverages chilled longer even while in the heat of Belize - I wouldn't day hours but longer than it would without. Wish it was a bit larger capacity as I find myself refilling it quickly. 

Disclosure: I received this complimentary product via Influenster, but this is my honest review.