Tervis tumblers feature doublewall insulated construction that keeps drinks hot or cold longer and reduces condensation to prevent rings on your table Strong impact resistant BPAfree material means these tumblers can take a tumble without shattering and wont retain tastes or odors Straw Lid is BPAfree minimizes spills presses securely in place and removes easily with an ergonomic tab The soft flexible straw tip detaches in 2 pieces for easy cleaning Most tumblers are microwave freezer and dishwasher safe for noworry convenience and fit most cup holders Each classic tumbler is proudly made in America and backed by a manufacturer Lifetime Warranty so you can buy with confidence