Spoooooky! And just in time for Halloween. This chic, black mug has a heat reactive surface that reveals tons of falling spiders when hot liquid is poured into it. Guaranteed to give you nightmares! When cool, the spiders retreat into their lair until the next time you want your morning coffee. 

•  11 oz. 
•  Ceramic material with black exterior and white interior
•  Heat-reactive design.
•  Glossy finish
•  Hand wash recommended