Bentgo Kids Chill keeps your child's lunch perfectly cool until it's time to eat. The unique leak-proof design includes an optional built-in ice pack that nests below the bento-style compartment tray. Simply place the ice pack in the freezer overnight and pop it into the lunchbox on days you want to keep food chilled on the go. When it's not necessary to keep food cool, just skip the ice pack. It's a sleek, all-in-one solution for sending your child to school with a fresh, healthy, portion-perfect lunch.freezer Safe: The entire lunchbox is freezer safe making it easy to prepare meals ahead of time and have them on hand when needed.microwave Safe: Compartment tray can be placed in the microwave to reheat meals for a warm, homemade lunch.easy Clean Up: Place the inner food tray on the top rack of the dishwasher and hand wash the outer container and ice pack for quick cleaning.