Minimal Food Jar 750 ml BlueINSULATION INNOVATION: The double walled, vacuum Insulation system, with extra copper insulation layer in between, will ensure that your favorite meals maintains its temperature for many hours to come. The Food Jar could keep contents warm or cold up to 7 hours. It could keep the temperature even longer if stored inside a cooler or a shielded lunch bag. LARGE OPENNING: The Food Jar is perfect size for your snacks or lunches at school, office or even