The glass is made from borosilicate glass which is lighter and stronger than regular glass, hand blown, heat-resistant, lead-free and bpa-free.

• Made of borosilicate glass, ultra clear and heat resistant
• Food grade material and process, lead-free
• Individually hand-made by expert artisans
• Can be used to both prepare and serve perfect hot or cold beverages
• Sold by Lees Glassware, lifetime warranty