Zalto is the perfect glass. The glass is mouth-blown, burned at 1400 degrees and manufactured without the addition of lead oxide. This is quite unusual and makes the glass resistant to imperfections and offers all the best qualities of a modern glass in regards to care and durability. Therefore, Zalto Denk 'Art glass has won first prize in several competitions and won the over famous brands such as Riedel glasses, Spiegelau glasses, Zwiesel glass, Orrefos glass, and Lobmeyr glass. Zalto Denk Art comes from the south of Austria, an area where the proud glassblowing traditions has been upheld since the 15th century.