Pay 9 Get 12. This set contains 4 pieces Ouverture White Wine, 4 pieces Ouverture Magnum, and 4 pieces Ouverture Champagne. The wine-friendly machine-made glass set of the glass collection Ouverture is offered as an attractive value gift pack. Ideal to give as a gift or to enjoy yourself. It is RIEDEL's uncomplicated entry-level series. All RIEDEL glasses are dishwasher safe.