Material: high borosilicate (resistant to -20 C-150c)Weight: Gross weight 357g Net weight 302gProduct capacity: 600mlProcess: manual blowing [Features]:1. High borosilicate green environmental protection glass, crystal clear, good texture.2. It has strong mechanical strength and strong performance for rapid cooling and hot temperature changes.3. Strong corrosion resistance to chemicals such as acid and alkali.4. Easy to clean and does not absorb the taste of tea.5. Applicable to: herbal tea, black tea, green tea, Pu’er tea, health tea and craft flower tea, can also be used to brew coffee and milk products, etc.