Extra-strong treated paper minimizes the potential for messy leaks. Traditional conical shape, as it makes set-and-forget placement impossible, helps reduce common-area litter. Cups fit all standard water-cooler cup dispensers. Perfect for doctor and dental offices. ProPlanet™ Seal-This product earns Dart's ProPlanet™ Seal because it meets ASTM requirements for commercial compostability. Cup Type: Cone Cup; Interior Volume Capacity: 4.25 oz; Material(s): Treated Paper; Material Type: Paper.