SAFE AND MADE TO LAST: Our coffee glass is made of thick glass. Compared to normal (soda-) glass, our glassess are much harder and stronger, they are more heat- (enough to safely pour in boiling water!); and they stand up better to acidic drinks. and widely used in high-end cookware and drinkware. Single Spouts, With Wood Handle Anti-scalding. DETAILED DESIGN: Our espresso shot glass measuring cup is designed with 1 spout for easy pouring without turning. Graduated marks read in milliliters for all your measuring needs.