Pour in your favorite hot beverage and find out what this super-cute Niffler has got its hands on. This Fantastic Beasts Niffler Heat Change Mug features an all black design, with the official Fantastic Beasts logo at the top, and once warm a Niffler appears holding a shiny pocket watch! A wonderful gift for lovers of J.K. Rowling's Wizarding World. This ceramic mug with heat changing decal is the perfect accompaniment to your next tea break. Hand wash only. Not dishwasher safe. Do not microwave.