AM5377 Transparent Glass Coffee Mug for Coffee, Tea, Latte, Cappuccino and Juice (Set of 2Pcs)About this item Quality material: the glasses espresso mugs are made of borosilicate glass with extremely high heat resistance and explosion resistance, it can withstand the temperature from 20 to 130 . It is lighter and thinner than other mugs, but stronger and more durable than common glass. A crystal clear look and all edge are smooth, creating a nice feeling in hand Large capacity: each transparent coffee talk glasses measure approx. Enough