This double walled glass mug was made with borosilicate glass, which ensures that boiling hot water will not cause cracks or shatters. This ultra high-quality glass is often found in high-end restaurants, wineries and laboratories.

12oz (340ml) high borosilicate - insulated keeps beverages hot and cold microwave and dishwasher safe (top rack).

Packaged with a keepsake art box and booklet with information on the artist: Ernest Swanson.