Using this Hello Kitty tumbler is easy. Just open the lid, pour in your favorite hot or cold drink, and you're good to go. The soft - grip handle makes it comfortable to hold, and the sturdy straw is great for sipping. When it comes to cleaning, hand - wash it with mild soap and warm water. Avoid using abrasive cleaners as they might damage the tumbler's surface. Also, don't put it in the dishwasher or microwave. Store it in a cool, dry place when not in use to keep it in good condition.