The BIG BOSS Food Jar lives up to its name. Durable stainless steel construction, up to 10 hours hot and 24 hours cold temperature retention, and enough capacity to confidently feed a hungry pack of kids. Not only is this our largest STAINLESS KING Food Jar, it also has a great surprise hiding inside with two 20-ounce microwaveable, dishwasher safe containers. Great for keeping food separated. Your favorite meal goes where you go. The built-in carry handle is ideal for long hikes or any outdoor adventure. Exterior stays cool to the touch with hot contents and sweat-proof with cold. THERMOS brand food jars are dishwasher safe, top rack recommended.