Luciano High Borosilicate Double Wall Glass Bowl Set This set of Isotherm Double Wall Glass Bowls is composed of 2 500ml cups without handles. They come in a gift box and are not only elegant, but they are also light and when you use them once, you feel like you cannot use normal glass anymore. They are hand-made and special attention is taken to details and a special quality control is made to make sure items are conform to standards. They are ideal for fruit salad or for other deserts and even for soup. Double Wall Glass Cups help keep the temperature of the liquid inside. They are called Isotherm. The outer wall in contact with your hand remains at room temperature, while the internal wall and the space between two walls keep the temperature of the liquid inside whether cold or hot. High Borosilicate glass is extremely resistant to hot and cold temperatures. This is why these cups are especially convenient for hot or very cold mixtures, coffee, tea, espresso, for hot or cocktails and shots for cold. It's preferable that all double wall glass items are not washed in dishwashers. Luciano High Borosilicate Double Wall Glass Items are made in China in Luciano Glass Factories, and they are tested for safety and food security.