Gone are those days when there was only one kind of coffee mugs. It's time to step out from what was boring and enter a new world with these Double Walled Glass Coffee Mugs. They are handmade and transparent which is worth a watch. You will love to see your favorite beverage inside this beauty before having it, one sip at a time. The transparent design you see here is heat-resistant. So you need not worry about breaking this mug with a very hot drink. Just enjoy your coffee, visually!