Founded in 1872, Zwiesel are the independently recognised, global market leader for the supply of high-quality, Titanium crystal drinking glasses. Designed at Zwiesel, an historic Spa town in Bavaria, Germany, they produce fine drinking glasses in durable, Titanium TRITAN - the world's only patented crystal glass. Unlike old-fashioned Crystal, Zwiesel's Titanium Crystal production does not involve the use of harmful lead and the 21st Century factory is both eco friendly and sustainable. They make their own oxygen fuel, scrub emissions and clean waste water. Yes, they have factory chimneys, but they vent water vapour not toxins. Their credentials make them the perfect addition to Season Green.