Double-walled Glass Cup Engineered with dual-layer borosilicate glass construction, this cup maintains optimal beverage temperatures while remaining comfortable to hold. The insulating air gap between walls keeps hot drinks hot and cold drinks cold, reducing condensation on the exterior. Durable, heat-resistant glass withstands thermal shock and everyday use. Perfect for coffee, tea, or any beverage, this versatile cup combines functionality with elegant transparency. Dishwasher safe and built to last.