Tervis tumblers feature double-wall insulated construction that keeps drinks hot or cold longer and reduces condensation to prevent rings on your table. These tumblers are microwave, freezer and dishwasher safe for no-worry convenience and fit most cup holders. Great when company comes over and you want to share a quick drink! No coasters needed! Also great for the RV or pool deck, no broken glass to worry about. You’ll love having a matching set in your cupboard. Each classic tumbler is proudly made in America and backed by a Lifetime Guarantee so you can buy with confidence.