Pour the hot beverage of your choice into this Line Friends BTS BT21 Heat Change 11 oz. Mug and watch as your favorite BT21 characters appear out of the black! When cold, the mug features the BT21 logo and Van, but when hot, the vibrant colors shine through and the rest of the cute gang - Koya, RJ, Shooky, Mang, Chimmy, Tata, and Cooky show up against a bright-blue background. For BTS fun tomorrow and every day, order this exciting mug today! Hand wash only. Not dishwasher safe. Do not microwave.