By using high-quality borosilicate glass, the tea glasses will not burst even at high temperatures. It is possible to fill hot water into the ice-cold mug. Freezer suitable.
It is thicker than other glass teacups on the market. Sturdy and strong enough to ensure it can be used longer without breaking.
Natural bamboo and high quality brushed stainless steel make for a solid but exquisite lid. Silicone of the cover ensure a tight seal while preventing scratches and collisions.