large picnic cooler backpack 1. Material: 600D polyester+3mm PE foam+13C PEVA lining 2. Size:42*27*21cm large picnic cooler backpack 1. Product Description: Item No.:BCBC007Material:600D polyester + 3mm PE foam + 13C white PEVASize:42*27*21cmStructure:1. double layer2. above layer with drawstring closure3. bottom layer with zipper closure4. 1 little zipper pocket on the bottom layer5. 1 bag flap ...