Food Thermos Jar - Double Wall 18/8 Stainless Steel Vacuum Sealed - 17oz. Capacity Matte Black Durable travel food jar for hot or cold foods, 16 oz. capacity. Double Wall Vacuum Sealed Stainless Steel Interior & Exterior. 2.75" Wide Mouth for Easy Filling and Cleaning. Threaded Lid with silicone gasket stores the foldaway stainless spoon. Hand wash. Not for microwave or freeezer use.