At the heart of the appeal of double wall cups is their unique construction. Made from two layers of glass or other materials, these cups create an insulating barrier. This means that when you pour a hot beverage, like coffee or tea, the outer layer remains cool to the touch, preventing any burns to the hands. Conversely, if you serve a chilled drink, such as iced coffee or smoothies, the outer surface resists condensation, keeping the exterior dry and ensuring a comfortable grip. This dual-layer design not only prioritizes user safety but also adds an interesting visual element as you can see the drink suspended within the walls of the cup.