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American Museum of Natural History.

Light Your Own Path Heat-Changing Fireflies Mug

SKU
404004595454
$20.00
$18.00 Member Price

At first this seems like just a plain black mug with the text "Light Your Own Path" encircling the top but when you add a hot beverage it magically glows with fireflies and the Museum's 150th anniversary logo. The ceramic mug holds about 10 oz. Hand wash for safety.