Review on ☕ JoyJolt Savor Double Wall Insulated Espresso Mugs - Set of 2, 5.4-Ounces by Randy Montiel

The size of these mugs is definitely a quality advantage. You'll easily mistake a double espresso with frothed milk or froth for a small latte. However, the quality is not outstanding. At first glance, the cups appear to be made of plastic. The walls are very thin and don't feel solid at all. I'm pretty sure they're actually glass as described, but we've already prepared for them breaking at some point in the future because they don't appear solid. They are VERY light. Not sure if they are dishwasher safe but we definitely won't put them in the dishwasher as I don't think they will survive. They were inexpensive though so we feel like we got what we paid for with these mugs.