Sinclair Glass Irish Coffee Mug (Set of 2)

Perfectly formed, this stylish double coffee cup set is a wonderful addition to any coffee lover's kitchen. Two layers of lightweight borosilicate glass are mouthblown together to create a unique glass-in-glass effect. The result is a vacuum layer of thermal insulation that keeps hot drinks hot and easy to handle, and cold drinks cold without condensation. The two-layer design creates a dramatic optical illusion.