[Thick Aluminum Foil Insulation]High-density aluminum foil material effectively locks in temperature, keeping food fresh and warm for extended periods. [Spacious Design]Roomy interior easily accommodates children's lunch boxes, fruits, and drinks, meeting diverse student lunch needs. [Adjustable Shoulder Strap]Equipped with an adjustable single shoulder strap, allowing children to carry independently for effortless outings. [Eco-Friendly Material]Exterior made from durable, non-toxic environmentally friendly fabric, ensuring safety for daily use. [Versatile Carrying Options]Supports both hand-carry and shoulder-carry methods, adapting flexibly to various situations, ideal for home, school, and travel use. Specifications: Material: Aluminum foil insulation, eco-friendly fabric exterior Dimensions: 25 x 17 x 19 cm Carrying Methods: Hand-carry handle, adjustable shoulder strap Usage: Lunch bag, picnic bag, food storage Features: Insulated, large capacity, portable