18/8 STAINLESS STEEL CONSTRUCTION WITH DOUBLE WALL INSULATION. KEEPS BEVERAGE HOT FOR UP TO 6 HOURS, AND COLD FOR UP TO 6 HOURS - 12 HOURS WITH ICE. TAPERED BOTTOM FITS CUP HOLDERS. CLEAR PLASTIC PUSH ON LID AND SLIDING DRINK OPENING. COMPLIES WITH FDA. 4" DIAMETER X 7.625" H