18/8 STAINLESS STEEL CONSTRUCTION, DOUBLE WALL INSULATE, KEEPS BEVERAGE HOT FOR UP TO 12 HOURS AND COLD FOR UP TO 24 HOURS WITH ICE. POP UP TOP REVEALS BUILT-IN STRAW, COMPLETE WITH LANYARD. FDA CERTIFIED. COMPLIES WITH FDA, PROP 65. 9.625" H X 2.75" DIAMETER