Clearzip Polypropylene Bags are a lucid crystal clear bag which enhances the Poly Bags Contents. It provides a highly protective barrier against precipitation and vapors. It helps delay evaporation and dehydration to preserve newness and taste of contained foods. More cost effective and more resilient than cello. Our plastic food zip storage bags poly prop bags meets all FDA and USDA specifications for food contact through 100% Virgin Resin.