This is a Dansk Spectra cocktail glass, a gift. It's said that the color of the glass at the bottom will reflect when you pour in a drink. The thick bottom provides good stability. It's not made of tempered glass, so it says not to use a dishwasher. The capacity is 200ml, according to the internet. The glass is cloudy from being stored for a long time, but I'll leave it as is because washing it might be considered used. Please understand. It was originally a pair of glasses, but one was sold, so this is the remaining one.