Lunch Bags For Boys - Insulated Lunchboxes for Boys Girls , Thermal Green Lunch Boxes for Kids School INSULATED LUNCH BAG. Our Boys Lunchboxes features a zippered main compartment which means food stays hot or cold in the bag. Please use ice packs for keeping cold, not ice cubes. LAYS FLAT. When empty, these insulated kids lunchboxes collapse flat so it can go into a backpack for easy transport home. ADJUSTABLE STRAP. These lunch boxes for girls and younger boys have an adjustable strap which means that it fits boys of all ages. SIDE BOTTLE HOLDERS. These kids lunchboxes hold a water bottle so your child can stay hydrated. LARGE MAIN COMPARTMENT. This lunch box for school can hold at least one sandwich, one 12 oz drink and 2 pieces of fruit.