The Performance decanter was introduced in 2018 as a compliment to the groundbreaking Performance glass series. This machine-made piece features a simple design with optical blown glass. The art of this craft originated in Venice, the cradle of the most superior glassblowing techniques.This decanter is designed for a single bottle of wine.This pack contains a single piece.Machine-made and dishwasher safe.RIEDEL recommends: Use bottle cleaners to remove stains from the decanter. Caring for your RIEDEL Crystal RIEDEL glasses are dishwasher safe. RIEDEL exclusively recommends MIELE To avoid stains: use soft water (low mineral content) To avoid scratches: Avoid glass contact with other glass or metal To remove stains: use white vinegar If available use a stemware rack If washing by hand Wash the glass under warm water (use detergent and rinse the glass carefully) Glass polishing: Use two polishing cloths, never hold the glass by the base to polish the bowl Stem snap: Occurs through mishandling = torque or bend pressure at the stem Storage: Avoid glass storage in kitchen cabinets which have strong aromas that translates into glass Microfiber Polishing Cloth Wash at boiling temperature (to kill bacteria) with odorless soap Should be machine washed at min. 170° F/75° C Never use fabric softener when rinsing your microfiber polishing cloth (avoids grease film on surface)