This pack contains 2 pieces.The Viognier/Chardonnay glass is perfect for allowing white wines to express their freshness, spiciness, and mineral characters.This glass is designed so the Viognier variety's low acidity is delivered in a way that sets off the alcohol and rich flavours of the wine. The shape highlights its velvety, supple texture, emphasizing the fruit and ensuring a long, balanced finish.Designed in 2004, the RIEDEL O Tumbler was the first varietal-specific wine tumbler in history. O is an innovative take on the casual wine glass, based on the benchmark shapes of RIEDEL's Vinum series. Better yet, the O Tumbler fits into every dishwasher so broken stems are a thing of the past.This product is machine-made.This item is dishwasher safe.