Ceramic mug with a blue floral pattern, a simple and beautiful design. - Design: Ceramic mug with a blue floral pattern - Material: Ceramic - Interior color: Gray - Handle shape: Round handle - Bottom shape: Flat bottom ☆ Size: Diameter 7-7.3cm Height 8cm The vertical lines on the inside are not cracks, but seams where a single piece of clay was joined. It is not perfectly circular. The glaze is not applied to the bottom. It has a handmade feel. I bought this during a trip to Hida Takayama and have been storing it for years. For those who like it.