Size: 108mm. This Villeroy & Boch Colour Concept Tumbler Smoke is made from Crystal Glass. With its harmonious and fashionable colour range of rich, warm and cool, fresh tones, Colour Concept caters for versatile individuality, providing something for every taste, occasion and time of year. The coloured glass is handmade using a traditional interior overlay technique that produces particularly strong intensive colours. Colour Concept can be combined with many of the Villeroy & Boch dinnerware collections to create atmospheric and seasonably colourful table-settings.