This exquisite double wall glass coffee mug with a sturdy and stylish black handle is expertly crafted from high-quality borosilicate glass. The double wall insulation not only keeps your beverage hot or cold for longer but also protects your hands from the temperature of your drink. This mug is not only a great addition to your home but also makes an excellent gift for coffee and tea lovers who appreciate high-quality craftsmanship and aesthetics.