An ideal choice for people on the go, the Sipp Vacuum Insulated Travel Tumbler is built to last and loaded with features to make for a more enjoyable drinking experience. The push button lid make it easy to drink on the go and its seal is virtually leak proof. Thermos vacuum insulation technology virtually eliminates temperature change within the beverage container by creating an airless space between two stainless steel walls. The result is an insulation layer that performs better than any other. A superior insulated container you can depend on to keep your beverages hotter, colder, fresher, longer. This travel tumbler keeps beverages hot for 5 hours or cold for 9, making it a great choice for long days out and about or in the office.