Stanley Classic Vacuum Food Jar is a leak-proof thermal flask or jar, made from double-walled stainless steel. The jar can be easily closed or opened and the large opening makes drinking or eating easy. Thanks to the well insulated inner wall, food stays hot for up to 15 hours, or cold for up to 18 hours. The handy cap can also be used as a cup or bowl. The housing is made from extremely strong stainless steel, making sure that this flask lasts a lifetime. This Food Jar is perfect when you go on outdoor adventures, but is also ideal for daily use.