Using this mug is easy. Just remove the fluffy cover if you want, pour your favorite hot or cold drink into the 450ml ceramic mug. When it comes to cleaning, hand - wash it with mild soap and warm water. Avoid putting it in the dishwasher or microwave to keep the Kuromi artwork and the mug in good condition. After washing, let it dry thoroughly before putting the cozy cover back on. If the cover gets dirty, you can gently hand - wash it too. Store the mug in a safe place to prevent it from getting chipped or broken.