Insulated lunch box is convertible—when you expand the main compartment it becomes a six-pack cooler. Exterior zip pocket holds utensils or napkins. FEATURES Quick-release buckle for easy attachment to backpack Padded handles for vertical or hoizontal carry Adjustable, removable shoulder strap 10" x 8" x 4.5" closed | 10" x 8" x 6.5" expanded MATERIALS 600D polyester main body | 420D nylon expansion section | Food-grade PEVA lining