Thermos 16 Ounce Vacuum Insulated Stainless Steel Travel Tumbler, Stainless Steel Thermos vacuum insulation technology for maximum temperature retention; keeps hot for 4 hours and keeps cold for 8 hours Durable stainless steel interior and exterior 360 Degree drink locking lid Cool to the touch with hot liquids, sweat-proof with cold Fits most automobile cup holders; dishwasher safe