Tea & coffee mug tempered 263 ml Per 12Reinforced glass. A tempered glass means that the glass has had an additional heating. The moment a tempered glass piece falls, it does not fall in a sharp point but in thousands of small square blocks. Tempered glasses can withstand a higher temperature shock. In addition, one cannot cut oneself on broken glass parts if the glass breaks, because it breaks into small pieces. For the hot beverage glasses, tempered glass is mandatory due to the higher thermal shock it can have. An unhardened glass can break due to the transition from cold to very hot.
