INSULATED LUNCH BOX:The 5 L Carry Out Lunch Box features lightweight insulation and a roomy, leakproof interior. Perfect for sandwiches and snacks, food stays fresh, and the durable, compression- molded exterior protects your goodies. KEEPS FOOD FRESH: Insulation keeps lunch and food fresh for hours when used with an ice pack. DURABLE LUNCH BOX: The main body fabric of the adult insulated lunch box is made of 100% recycled polyester with a durable coating. EASY TO CLEAN: The inside of the lunch box is fully-lined, and easy to wipe clean. EASY TO OPEN: The Hydro Flask lunch box zipper is easy grab and zip, and the carry handle is comfortable and easy to carry.