tervis.com/gasket. Dishwasher safe. Tervis Quality: Water bottle is dishwasher and microwave safe. Lid is dishwasher safe, top rack only. Both bottle and lid are BPA free. 866.Tumbler. Tervis.com. The Tervis Water Bottle is your new exercise partner. Double-walled insulation keep cold drinks cold longer for maximum refreshment. Reduces condensation, so it doesn't sweat - even when you do. Unique designs and personalization options avoid messy mix-ups at the gym. Single-button flip lid makes the Tervis water bottle easy to open every time. Made in America. Made in the USA.