4 1/2 x 3 1/4 x 13" - 1.5 Mil Gusseted Polypropylene Bags. These crystal clear, side gusseted polypropylene plastic bags make packing bulky and irregular shaped items easier. Bags keep products clean, protected from dirt, dust and moisture, grease and vapor resistant. Sizes listed are the inside usable space of the bag. Bags meet FDA and USDA specifications for contact with food products. Close bags with bag tape, twist ties, or by heat sealing. Select from many different polypropylene bags to fit your packaging, shipping, displaying and storage needs.