Luigi Bormioli Ametista 15-1/2-Ounce Beverage Glass, Set of 6 25 year guarantee.? the guarantee covers chipping on the rim or foot as well as any discoloration or cloudiness resulting from dishwashing 25 year guarantee covers rim and foot chipping as well as discoloration Innovative glassmaking techniques produce perfectly smooth rims and edges Lead free crystal Dishwasher safe