I have tried a lot of stainless steel tumblers. From the really cheap ones to the ridiculously expensive ones. These Built tumblers are the best ones I have ever used. They keep your drink hot or cold for a very long time. I still have ice left in my cup the next day! The color on the outside doesn't chip or rub off like other ones I have tried. The best part of these tumblers is definitely the tops. They are made so you can take them apart EASILY and wash them. With more expensive tumblers you can't take the tops apart and after awhile they get really gross. These tops you just pop open and clean. So simple! I couldn't ask for a better tumbler.

It takes a lot for me to leave a product review. This cup exceeded my expectations. I travel 3 times a week for my job throughout the region and I often leave my cup in the car. Yesterday the temps reached 97 degrees. Before leaving home at 8am I filled my cup with ice and sweet tea. At 2pm, my drink was still cold even though most of the ice had melted. The temp in the car was hotter than 97. I would definitely recommend this product.