Description: High boron silicon heat-resisting glass, instantaneous temperature - 20 ℃-150 ℃, frozen after 12 hours of boiling water is no problem. Heat-resistant borosilicate glass, compared with traditional soda lime glass (thick wall european-style crystal glasses), the molecular structure is more close, only need a smaller thickness can achieve better strength, thickness of 1.1 mm or so commonly, feel lighter, still strong and durable. The shape of this cup is designed as Bamboo joint. Bamboo Joint is hugely increased in China, academic progress, Simple and generous,as a prefect gift for you friends and colleagues
Features & details: Color: clear Size: 5cm * 4.5cm instantaneous temperature: -20℃-150℃ Material: high heat-resistant borosilicate glass Capacity: 70ml Applicable: Suitable for green tea, black tea, rock tea, fruit & flower tea, all kinds of loose tea.