16 OZ, Matte Steel, Leak Proof Travel Tumbler, Patented Thermos Vacuum Insulation Technology For Maximum Temperature Retention, Hot Or Cold, Unbreakable Stainless Steel Interior & Matte Steel Exterior, Cool To The Touch With Hot Liquids, Sweat Proof With Cold, Fits Most Automobile Cup Holders, Hot For 7 Hours, Cold For 18 Hours