Onami is a spinning metal maker who collaborates with designer YAMAZAKI Yoshiki to create these unique Nanigashi Spun Glasses. They are made by a single stainless plate of 1mm thick using metal spinning technique. Their thinness makes them pleasant to the mouth and because they are made of stainless steel, drinks can be kept cold or hot for long. Also, they are sturdy and will not break, and they are perfect to be used outdoors. Because the glasses have spinning tool lines on their surface, it is not slippery to hold even when your hands are wet. The black finish is made by baking URUSHI lacquer onto the surface which may not appear to be colored evenly, as the blackening is done manually by craftsmen, making each piece unique and enjoyable.