Detailed Product Description 1):frozen food packaging bag2)materisl: BOPP/CPE3)Size: 29*22cm according to customer special request for special packingSuitable for packing frozen shrimp ,frozen seafood ,sweet dumplings served in soup,meat bread,boiled dumpling, quick-freeze food,ect Features: Strong airproof. Suitable for cold storage, refrigeration. High strength material for heavy contents .