Luciano High Borosilicate Single Wall Glass Mug Set of 6 350ml Mugs This set of Isotherm Single Wall Glass Cups is composed of 6 350ml cups with Colorful handles. They come in a gift box and are not only elegant, but they also light and when you use them once, you feel like you cannot use normal glass anymore. High Borosilicate Glass is elegant on use and lighter than any other type of glass or cristal, and this is why it is becoming more and more popular and replacing soda lime glass items. This set of Color Handles Single Wall Glass Mugs is a perfect gift and looks so elegant when presenting cocktails or coffee or tea service. It's preferable that all double wall glass items are not washed in dishwashers. Luciano High Borosilicate Single Wall Glass Items are made in China in Luciano Glass Factories, and they are tested for safety and food security.