MIRA Insulated Food Jar is made of premium stainless steel, and made to keep your hot food hot for up to 5 hours, and your cold food cold for up to 10 hours. The jar has a wide mouth for easy filling and it can hold up to 15oz of liquid.  It is also BPA and Pthalate free.

The MIRA insulated food jar is great on the go container, ideal for taking hot soups or a home cooked meal for your work lunch, or when you need to bring milk for your child. Having an extra cold drink at lunch, is especially nice on a hot day too!  The lid is a leak proof cap that screws on tightly,  so there will be no worries of spilling!

For the maximum insulation efficiency, it is best to preheat or pre-chill the jar prior to use. To do this,  fill the jar with hot or cold tap water, attach lid, and let it sit for 5-10 minutes, then empty. After filling the jar with the food/drink you're wanting to be kept hot or cold, place lid on immediately
to increase thermal efficiency.

If you're looking for an insulated container to add to you or your child's lunch box, MIRA's insulated jar is a good one, available for purchase on Amazon for $22.95 and is available in the colors: 
pink and blue, or they also have a 10oz available in the color green.