Oxford Daily Quartier Mugs, Multicolored, Set of 6 Set of 6 mugs (12 oz each). 100% Lead-Free. High-quality exterior enamel protects against metal marks and other damage. Vibrant Colors on top grade ceramicware Unmatched thermal resistance from -65F to 500F. Safe for the freezer, microwave and dishwasher Made and Designed by Oxford since 1954