Basic Bar Square Coupe Martini 25.9cl/8.8oz: Basic Bar Selection was created by Charles Schumann as the definitive bar collection. This 259ml/8.8oz square coupe cocktail glass is manufactured in Tritan Crystal, the World's most durable crystal glass. It has a shorter stem for easy storage and handling on trays. The bowl is designed to reduce chipping. Dishwasher safe.