4 persons polyester cooler backpack 1. Material: 600D polyester +3mm PE foam + Aluminum Foil Lining 2. Size:28*20*39 cm 4 persons polyester cooler backpack 1. Product Description: Item No.:BBPC011Material:600D polyester + 3mm PE foam + Aluminum Foil LiningSize:28*20*39 cmStructure:1. 1 main compartment with zipper closure2. 1 front zipper pocket3. 1 side pocket with string closure4. 1 set of ...