Product description Glass, Every Drink -Around Convenience Versatile for Every Moment Is the glass cup suitable for espresso machines? The cup is 4 inches tall and may not fit in some espresso machines. Measure before buying. Is the glass cup well-made? Made of 100% borosilicate glass, it's microwave, dishwasher, and freezer safe. Can this cup keep drinks warm for ? This cup is made of heat-resistant material but doest't retain temperature. For insulation, try the double-walled series. Is the glass cup too big or too small? This large glass mug is for enjoying lattes and other drinks that require a generous amount of liquid. For detailed size information, please refer to the product image. Can I use a metal spoon with the glass cup? You can use a metal spoon, but please be gentle and avoid vigorous stirring. Since the cup is made of glass, it's delicate than metal. To ensure its longevity, we still suggest using non-metal utensils whenever possible. From the brand Discover timeless design and everyday durability We believe is built by people and memories. As , we craft simple, reliable, and beautiful kitchen and items to enhance your family's life. Our products result from of meticulous design and use of high-quality borosilicate glass, ensuring safety, durability, and a modern aesthetic. We love seeing our products become cherished of your , bringing convenience and beauty to your life. Borosilicate glass carafe with stainless steel filter. Brew smooth, low-acid cold brew in the fridge. Includes glass dripper and 28oz server. Borosilicate glass with stainless steel permanent filter--no paper needed