These are small, 2.4 oz. Brand new, in the box. Double Walled Design - 2-layer thermo glass mugs helps to maintain the glass at an ideal temperature while allowing the cups stay cool to touch, without burning hands and without condensation. Keep hotter than the single wall shot glass, bring a new level to enjoy the espresso. True Borosilicate Glass and Tapered Shape - Feeling very lightweight? Right! Due to espresso coffee glasses being made of high borosilicate glass, they are lighter and thinner than the normal glass but durable and stable. The flared lip of glass cups that makes the shot glasses easier to pick up and hold without spilling. Suitable Size and Space Saving - The espresso cup set hold 2.4 oz, suitable for nespresso machine and coffee maker, perfect for enjoying your double shot, espresso. What’s more, the glass can be stacked that help you to save space. Plus it is dishwasher, microwave safe, freezer safe.