Bodum's insulated glassware is made from durable Borosilicate glass. Borosilicate is a type of glass that is resistant to temperature swings and scratching. Dishwasher and Microwave safe and will not become cloudy over time.
Boise State Tervis Tumbler. Tervis Tumblers double wall insulation allows drinks to stay hot or cold many times longer than any other glass or vessel. They are dishwasher, microwave and freezer safe, resist condensation, scratching & discoloration. Every Tervis Tumbler comes with an Unconditional Lifetime Guarantee.