PRICES MAY VARY. Fill the mug with your desired beverage. Screw on the lid tightly. If you are taking the mug with you in a car, make sure the lid is closed securely to prevent leaks. Wash the mug regularly with warm, soapy water. Consider choosing a mug with a double-wall design to keep your beverage hotter or colder for longer. Enjoy your beverage ECO-FRIENDLY & DURABLE: Crafted from BPA-free, phthalate-free, toxin-free., no-rust stainless steel. Enjoy personalized drinks, tea, milk or coffee