The Leak-proof Food Jar by Thermos is a lightweight, portable food carrier designed just for kids. You'll be relieved to see that its stainless steel interior and exterior can withstand a hearty beating - and is perfect for keeping food cold or hot as you and your family go about your day. Using the Thermos TherMax(R) technology, the double-wall vacuum ensures the best insulation possible for that afternoon snack. Amazingly, it can keep cold foods chilled for 7 hours and keeps hot food warm for about 5 hours. It is designed to be kid-friendly, with its ergonomically-designed, rubberized lid and wide mouth for easy nosh access. And true to its name, it is leak-proof to keep snacks and drinks contained. Because kids are often inspired to use a sippy cup as a percussion instrument, the base is rubberized and scratch-resistant.