This Capacity Insulated Lunch Bag is made of Dupont paper fabric with a laminated surface, strong, durable and soft, waterproof and breathable. With built-in aluminum foil and pearl cotton, it has a very strong insulation effect. You can use it as an insulated lunch tote, or use it as a picnic bag, grocery bag or shopping bag. The multi-purpose lunch tote is perfect for packing food for work and travel.