Designed for kids (and their parents!), the Thermos Funtainer food container features vacuum insulation technology that keeps contents cold for up to 7 hours or warm for up to 5 hours. The stainless steel construction is durable and withstands the demands of daily use. Perfect for little ones on the go, the ergonomically designed lid has a rubber grip for easy handling, while the base of the jar is non-slip and scratch-resistant.