Discover our amazing Reusable Tyvek Insulated Paper Cooler Lunch Bag. Made from lightweight and tearproof Tyvek paper, this cooler bag features thick insulation to keep your food cold, warm, or fresh for hours. The brown paper sack is soft yet extra strong, waterproof, and leak-proof, making it perfect for storing milk, lunch boxes, water bottles, and more. It is a sturdy and durable option, ideal for adults, women, and men. Large enough for meal prep, everyday lunches to work or school, and road trips. Please confirm packing info, stock color, and exact production time with us before placing your order.