The glasses in the Rossini 3-Piece Whiskey Set are made in Italy of SON.hyx break resistant glass. Luigi Bormioli's proprietary SON.hyx glassware formula represents an exciting fusion of elegance and technology. The glasses are 11 1/2 ounces in capacity, have laser cut rims, ideal weight, and maintain their clarity for up to 4000 industrial dishwashing cycles. The Decanter is 23 3/4-ounces in capacity, lead free, dishwasher safe, and comes with an airtight glass stopper for optimal flavor and aging. The Rossini 3-Piece Whiskey Set if perfect for any home bar or entertaining.