This set of 4 thermal mugs called Liss is designed with a double wall to keep your coffee or tea warm for longer. Made of stoneware, the mugs from House Doctor are finished with a dark grey glaze with tonal dots that add a hint of shimmer when the light hits the surface. Instead of a handle, the tapered design makes the mugs easy to pick up and comfortable to hold. Use the mugs when you are having guests over, for tea in the evenings or for an afternoon break. Whenever, really. They are an ideal choice for occasions that require some everyday elegance.