About the canteen double wall glass mugmeeting a friend for coffee, cradling a cup of tea on a rainy day sometimes the smallest pleasures deliver the biggest enjoyment. Now you can make these moments even more unique, courtesy of bodums canteen double wall glass mug set. An elegant addition to your kitchenware, our double wall glass mugs are as stylish as they are functional. Each glass is individually mouth-blown from borosilicate glass to produce a thermal effect, while a clever silicone valve regulates the external temperature of the glass - so you can wave goodbye to scalded fingers and messy condensation.their unique design keeps hot and cold drinks at their desired temperature for longer, so in addition to being superb glass coffee mugs, theyre also ideal for tea, cocoa, cold brew and chilled desserts. But its their appearance that dazzles.the double wall design produces an eye-catching optical illusion that makes the liquid appear as if its floating in the glass. So whatever youre serving, it will look truly sensational.main features benefitsset of double wall glass mugsinnovative double wall construction that keeps hot drinks hot and cold drinks cold.also perfect for serving soup or cold desserts.made of mouth-blown, heat-resistant borosilicate glass. Intelligent silicone vent that equalizes the air pressure between the two layers of glass.available in a choice of sizes.dishwasher, freezer, microwave and oven safe up to 350f176c.use carewash in warm, soapy water before first use and dry thoroughly. For all subsequent uses, wash and dry by hand or pop in the dishwasher. Canteen double wall glass mugs are safe to use in the freezer, oven and microwave.