Set of 6 Schott Zwiezel Classico Martini Glasses 6 Each Classico collection stemware Tritan crystal glass: non-lead material of titanium and zirconium oxide; resists breakage, chipping, scratching; thermal shock resistant; patented Classico collection: known for durability and elegance; moderately tall stems; bowls styled to create a soft round shape and slightly wider opening Completely dishwasher safe; do not force bowl tightly over dishwasher rack prongs; do not twist stem and bowl while holding one or the other tightly Made in Germany.