Mizu-tama is made by skilled glass artisans using a technique called "chu-buki" or "air-blowing." Mizutama means "dewdrop" in Japanese. The shape of each piece is slightly different. Each piece of glass, being handmade,, is different in terms of bubbles, shape, depth, and angle of entry into the inside, but each one allows you to enjoy the delicate beauty of glass. There transparent glass mass, like water, has a unique presence, reflecting the surrounding scenery. [specification] Designer: Hironao Tsuboi Material: Glass (with pen) Size: φ55mm x H52mm (there are individual differences) Weight: 195g Made in Japan <Caution> ・Please note that the specifications of the included pen may change (due to discontinuation by the manufacturer).