We’ve put a new spin on one of our hottest selling mugs! The double wall diner mug is a modern borosilicate take on our café classic mug. This lightweight mug feels great in your hand and the double wall glass means that your hand stays cool while your brew stays hot longer. *Holds 10 oz. * Insulated * Double-wall borosilicate glass * Ergonomic design * Microwave safe Best for: art collectors, astronauts, engineers. Specs: holds 10oz, borosilicate glass. Care: top rack dishwasher safe or hand wash.