Gusset Cello Bags 3-1/2" X 2" X 7 1/2" | Quantity: 100 - Gusseted Cello Bags, 3-1/2" X 2" X 7-1/2", are made of clear hard cast sheets of polypropylene. Cello bags have a seam up the back for an expensive look. Cello bags meet FDA and USDA specifications for food contact. Food bags are also gusseted.