Reusable insulated classic brown paper lunch bags is very light, lightweight and portable for picnicing or camping, don’t take up much room in handbag or backpack. Made of Tyvek material, brown kraft paper bag is soft but extra strong. The product has the function of keeping warm and keeping cold. Reusable, waterproof, washable, anti-aging and breathable, high strength and tear resistance. It can keep the food fresh and save the heat, and it is also good for the preservation of fresh food. Used as lunch bag for school and work, supermarket shopping preservation bag, picnic bag, milk storage bag and so on. Customized is available. Made from dupont paper material, measuring 8*4.5*12 inches, this custom reusable insulated classic brown paper lunch bags. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: Eco-friendly material, reusable, foldable for storage.