This glass double wall cup is made of durable, heat resistant, mouth-blown borosilicate glass of the finest quality, and popular with flower blossom tea such as chrysanthemum blooming tea. Borosilicate glass is stronger than common glass. It is shatter-resistant and resitant to high heat. It is the same glass used in making beakers, test tubes and other chemistry equipment. It is lead free glass.
400ml glass double wall cup with glass lid, we can put your logo for free.