This is the high standard glass material. It includes models which are often too complex to manufacture through automated processes, due to their shapes and design features, and models which have been exclusively designed for premium spirits. Attention to detail pervades throughout. These decanters and luxury bottles are characterized by the following features: the thickness of the glass, a sign of luxury and quality; individual components that combine to create a distinct look; perfectly distributed columns; "at and prominent shoulders; flanges; a selection of collars; sharp edges.