This 300ml insulated stainless steel food jar in brushed steel is designed to keep wet foods warm for up to 4 hours and cold up to 6 hours.  It is constructed from two layers of unlined 18/8 (304) food grade stainless steel and has a leak resistant stainless steel and polypropylene (PP#5) lid, designed so that only stainless steel comes into contact with foods inside the jar.  The bottom of the jar also has a removable silicone ring which is designed to help protect surfaces and the jar from scratching.
For hot foods, pre-heating is recommend by pouring hot water into the container for a few minutes prior to adding hot food.