Coffee maker is made with Borosilicate glass, Stainless steal. Stainless Steel frame holds 400 ml of coffee. The dimensions are 6.25in x 6.25in x 13.5in. Tolerance of instantaneous temperature difference from -30°C to +150°C without any cracking. Tolerance of temperature as high as 600°C without any cracking. Perfect Cold brew coffee maker for Home, office, bar, restaurant, ect. Container can hold anything from water, tea, coffee, juice, etc. Hand made, the glass is heavy duty, and hand blown. Cold brew makes less acidic coffee, with a sweeter, and richer taste.