Use Oxford cloth, durable and easy to clean。The inner Aluminum foil film material enhances heat preservation and cold preservation, and keeps food fresh and delicious.Use: Lunch box, freezing food,fruit and drinks Keep fresh, ice or thermal insulation , Medicine storage . Suitable for: Holiday travel, Field trips, Picnic, Office workers, Students to school.Feature: Easy to carry, use, and clean.Type: BackpackMaterial: Oxford clothMaterial: 600Dweight: 0.9kgsize: 29x20.5x46cmInner layer: EVAthe way: ShouldersPackage Included:1 PC x Cooler BackpackNOTE:1.As a result of manual measurement, please allow 1-2cm error.2.Due to the different lighting during the shooting, the picture color is slightly different from the actual product.Large capacity for continuous cooling.