Using this tumbler is easy. Just open the BPA-free sliding lid and fill it with your favorite hot or cold drink. The lid's splash-proof design keeps your drink from spilling. You can take it with you anywhere - to the gym, on a road trip, or to the office. It fits nicely in a standard car cup-holder. When it's time to clean, don't use the dishwasher or microwave. Instead, wash it by hand with mild water. Avoid using hot water, detergent, hard cleansing tools, or harsh chemicals as they can damage the print. This way, you can enjoy your tumbler for years to come and also help the environment by reducing the use of disposable plastic cups.