Insulated lunch bag

An insulated lunch bag is designed to keep food and beverages at a safe, fresh temperature for several hours. It uses thermal lining materials—often foam insulation paired with aluminum or PEVA lining—to maintain warmth for hot meals and coolness for cold items when used with ice packs. These bags are lightweight, portable, and come in a variety of sizes and styles for school, work, travel, or outdoor activities. Many insulated lunch bags are made with durable, easy-to-clean fabrics and include features like zippered closures, leak-resistant interiors, and additional pockets for utensils or napkins.