Enjoy Your Favorite Drink Like Never Before With The JoyJolt Aroma Double wall Glass Cups! The Aroma Double Wall Glasses perfectly suited for a multitude of hot and cold beverages as well as desserts. Handmade of heat-resistant borosilicate glasses these vessels insure that their contents will remain hot for a longer period of time while the glass itself remains cool to the touch. They are dishwasher and microwave safe. The coffee and for tea mugs come as a set of 2 and hold 400ml (13.5 oz.) The Perfect Gift Idea! If you are looking for a unique present idea for friends and family, this is definitely for you. This set of 4 mugs comes in an elegant cardboard matte gift box, it makes an ideal for a housewarming, Holiday present for anyone!