The Duracoat Colored Rambler 30oz Tumbler from Yeti Coolers is perfect for keeping your morning coffee hot to the last drop. Thanks to the double-walled vacuum insulation though, this to go cup also keeps your iced beverages colder longer as well. The same design also prevents condensation from soaking your desk or hands. Yeti's Duracoat Colored Rambler 30oz Tumbler is guaranteed to keep your hot or cold drinks at their ideal drinking temperature for longer, so you can enjoy them to the last sip. Vacuum insulation prevents condensation Insulation helps maintain beverage temperature.