Home Thermos 10 Ounce Funtainer Food Jar-For fresh and healthy meals on-the-go, you can’t beat a genuine Thermos food jar to keep salads, fruit or other cold foods icy fresh until it’s time to eat. With TherMax vacuum insulation; this food jar will also keep soup piping hot. Thermos 10 Ounce Funtainer Food Jar-For fresh and healthy meals on-the-go, you can't beat a genuine Thermos food jar to keep salads, fruit or other cold foods icy fresh until it's time to eat. With TherMax vacuum insulation; this food jar will also keep soup piping hot.