Set of four. As shown in the photo, it was filled almost 90% full and held 180ml. For reference. I was using these at home, but they are still in relatively clean condition. IKEA glassware is sturdy, so it's nice that it doesn't break easily. (Japanese glassware tends to break easily because my hands get dry in the winter and I often drop them...) Glass/Cup/Sake Set... Set (3 or more) Material... Glass