Description Heating water can display patterns, after the temperature drops to restore the state before the color change, can be recycled. Specification: -Material:Ceramic Mug -Volume: 340ml/11.5oz -Not Dishwasher / Microwave Safe. Hand Wash Only! -Characteristic:You Will See A Surprise When The Mug Into Hot Water -Are You Looking For a Gift For a Friend or Family Member? You Found It! Our HEAT CHANING MUG Is The Good Birthday Gift For Coffee Lovers, Dad, Mom, Wife ,Husband, Daughter,son, Or friends! Our HEAT CHANING MUG You Can Give For The Birthday, Halloween,Christmas, New Year And Other Holidays. Package: 1x mug