KeepFresh 4" x 2.5" x 9.5" Cello Bags Gusseted, Premium OPP 1.2mil Crystal Clear Polypropylene Bag - Box/100 Box of 100 - Crystal clear 1.2 mil "cello" polypropylene bags Made of extreme clarity hard cast sheets of best quality domestic polypropylene This clarity cannot be made into a tube therefore they have a seam up the back Made of 100% virgin, high clarity polypropylene film Meet FDA and USDA specifications for food contact