Marvel Design - Embrace the excitement of Marvel with our colour-changing mug. This 312ml capacity mug is the perfect companion for your morning brew, afternoon coffee or evening hot chocolate Colour Changing Design - This tea mug features an enchanting design that changes colour with heat. Simply fill it with a hot drink and watch the magic as a vibrant Marvel design appears before your eyes Official Marvel Merchandise - Looking for Marvel collectables for yourself or a superhero fanatic? These heat changing mugs are official Marvel merch and the perfect addition to a fans daily routine Care Instructions - To preserve the heat-changing design, our Marvel mug is hand wash only and not dishwasher safe. The heat-sensitive feature requires special care to maintain its effect Marvel Gifts for Men, Teens and Boys - This official Marvel mug comes packed in a gift box, so it's ready to give to someone special at Christmas, for birthdays, or special occasions Add some fun to your daily routine with our Marvel heat changing mug. These 312ml capacity Marvel mugs for men and boys feature a mesmerising design that transforms with heat to reveal additional design elements. To preserve the enchanting effect, hand wash only (not dishwasher safe). See images for more features and details.