Tervis Tumbler

Tervis is a storied American brand known for pioneering the world's first permanently sealed, double-walled insulated tumbler. The brand was originally developed in 1946 by two engineers, Frank Cotter and G. Howlett Davis, in Detroit, Michigan. The name 'Tervis' is a combination of the last three letters of each founder's surname.

Today, the company remains a family-owned entity and continues to manufacture its classic insulated plastic tumblers in Venice, Florida. While the company has expanded its catalog to include stainless steel products (which are often sourced differently), the core double-walled plastic tumblers remain a staple of American domestic manufacturing. The brand is celebrated for its lifetime guarantee and its ability to keep hot drinks hot and cold drinks cold while preventing condensation.