This tumblers from SIGNATURE USA is durable, thermal insulated, and designed to last a lifetime. They create their tumblers using two layers of the highest grade polymer, the same material that is used to make prescriptive lenses. The tumbler is of double walled construction with one layer of the glass fitting inside the other. The inside tumbler and the outside tumbler are then ultrasonically welded together. The air trapped between the two layers is what keeps your cold drinks cold and your hot ones hot. The design and materials not only make the tumblers shatterproof, dishwasher safe on the top shelf, microwave safe, but helps virtually eliminate glass sweat. Elvis artwork by David O'Keefe.
- Double-walled technology allows your beverage to maintain it's temperature longer and greatly reduce the amount of condensation
- Virtually indestructible
- Black lid included
- Dishwasher and microwave safe
- Made in the USA!