The Koziol Tumbler Club No. 6 Superglas is a versatile long drink glass designed for environments where traditional glassware is prohibited. Crafted from transparent, unbreakable polycarbonate, these 410 ml tumblers feature a faceted design and a practical 0.3 l filling line. Measuring 14.1 cm in height and 8.7 cm in diameter, they are built to be impact-resistant and stackable, which helps save space during storage. This high-tech plastic provides thermal insulation four times more effective than conventional glass, making it suitable for both hot and cold beverages. You can safely use them in the microwave and wash them in a dishwasher up to 70°C, though a first wash above 80°C is recommended. To maintain their clarity, it is best to use pH-neutral cleaning supplies and a rinse aid specifically for plastic. Because they are recyclable and durable, these glasses are a practical choice for high-traffic areas or outdoor settings where safety and longevity are priorities.