Japanese Crumple Paper Crystal Whiskey Glass SetAn Edo crystal whiskey tumbler with a crumpled paper texture, holding 10 oz (about 260 ml). The irregular surface catches the light and gives the glass a sure grip, while the wide bowl lets a bold, spicy rye's aroma open. There is room for a large ice sphere up to 3. 5 inches when you want it chilled. It arrives in a wooden gift box. Hand washing is recommended to preserve the texture and crystal clarity.