Tervis tumblers are virtually indestructible. They won't crack, melt, shatter, or chip. Don't take it as a dare or anything, but if they do somehow break (despite following our care instructions), we won't leave you hanging. We'll replace it, guaranteed - Who wants to drink lukewarm coffee or tea? Does anyone really find refreshment in a warm glass of lemonade? Not us, that's for sure. There's a solution: double-walled insulation. Now all your steamers can stay hot and your chillers can keep cold. It's eureka times two - You take your Tervis everywhere, work, the car, the game, and everywhere in between. But did you know you can also give them full reign of the kitchen? Tervis products are made with an ultra-strong seal so they can stand up to the test in the freezer, dishwasher, and microwave.