About the bistro glass coffee mugs smarten up your kitchenware with this stylish set of bistro glass coffee mugs. Designed with the coffee connoisseur in mind, their glass construction means you can appreciate the visual beauty of your coffee blend as well as savoring its great taste – the same is true if youre sipping a cup of tea or indulging in a hot cocoa! crafted from durable, tempered glass, these sturdy coffee mugs are built to last, and theyll endure numerous cycles through the dishwasher without losing their clarity and luster. Ideal for everyday use, their clean, minimalist design works well with every kitchen style and complements other products in the bistro range. Main features benefits glass coffee mug. Made of durable, tempered glass. Dishwasher, microwave and freezer safe. Use care wash in warm, soapy water before first use and dry thoroughly. For all subsequent uses, wash and dry by hand or pop in the dishwasher. Bistro glass coffee mugs are safe to use in the freezer and microwave.