British Standard Kitemark for Vitrified Hotelware- a symbol of outstanding quality, safety and trust Edge Chip Resistance- All Bonna items meet the toughest chip edge standards and are designed for years of use Thermal Shock Resistance- Durable against sudden temperature changes and under extreme temperature conditions in the kitchen Glaze Damage Resistance- State-of-art glazing techniques offer high-level scratch resistance in all products Microwave and Oven Safe- Products can be used safely in a microwave and oven even for the high temperature requirements of restaurants Dishwasher Safe- High-resistance glazing process protects all Bonna products in highly corrosive industrial dishwasher environment to meet the fast cycle needs Stackability- Beside aesthetics, Bonna products are designed to give extra strength, reliable stackability and long life 13cm/5" (Dia) - 22cl/7.75oz