Lunchboxes For Kids By Bayfield - Shoulder Strap Blue Reusable Bags for Boys Girls LARGE MAIN COMPARTMENT. This lunch box for school can hold at least one sandwich, one 12 oz drink and 2 pieces of fruit INSULATED LUNCH BAG. Our teen Lunchboxes feature a zippered main compartment which means food stays hot or cold in the reusable bag. Please use ice packs for keeping cold, not ice cubes. SIDE BOTTLE HOLDERS. These lunchboxes hold a water bottle on each side so your child can stay hydrated for better health. ADJUSTABLE SHOULDER STRAP. These lunch boxes for kids and teens have an adjustable strap which means better construction and you can custom fit it to your body size. LAYS FLAT. When empty, this insulated lunch box collapses flat so it can go into a backpack for easy transport home.