The Bach is retro-chic with its elegant faceted design and is sure to inspire one's home bar and entertaining needs. The martini glasses are made in SON.hyx break resistant clear crystal glass. Luigi Bormioli's proprietary SON.hyx glassware formula represents an exciting fusion of elegance and technology. These machine blown glasses have laser cut rims, ideal weight, titanium reinforced stems , and maintain their clarity for up to 4000 industrial dishwashing cycles.