Bodum Bistro 4.7 oz Double Wall Thermo-glasses. Set of 2
Bodum calls this 4.7 oz cup an espresso cup, but here at Great Infusions we think anything over 3 oz is too large for espresso. It would make a fine small cappuccino cup (aka flat white).
Bodum Double Wall Espresso Ware glasses are distinctive and highly insulative 'hand blown' glass. Made of Borosilicate glass that is resistant to extreme temperatures and acids, with a patented silicone vent at the bottom to equalize the air pressure between the two glass layers.