The thermal insulation picnic backpack is made of Oxford cloth, thickened pearl cotton and thermal insulation aluminum film. It has a zipped main compartment with heat-sealed PEVA lining, 2 front pockets with zipper closure, two side pockets and adjustable padded backpack straps. There is a portable bottle opener on the shoulder strap. It can be kept warm for 4 hours and refrigerated for 8 hours.
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