This playful pair of mugs featuers the "takara-zukushi" pattern. Takara-zukushi refers to a pattern that contains takara (treasures) and includes the legendary uchide-no-kozuchi hammer, which can tap out anything the user wishes. Because each mug is crafted and painted by hand, no two are ever the same. The primary difference is on the handle: One features a blue flower stem, while the other is red.