This crystal-clear baby feeding bottle is made of first-grade borosilicate glass for heat resistance. It can be sterilized between -40℃ and 600℃ and it will not crack nor release any chemical constituents. This quality baby feeding bottle is BPA free, lead free, PVC free and Phthalate free to guarantee babies’ safety. 

• Material: borosilicate glass.
• Contains no poisonous substances to human body.
• The inner body is smooth and can be easily cleaned.
• Microwave ovens and dishwashers safe.