Our Wholesale 4.5 Mil Vacuum Seal Bags with Zipper and Hang Hole come in many different sizes to fit your vacuum sealing needs. Vacuum packaging is the process of extracting air around a product and then sealing the product in an impermeable package. It protects the product from oxidation, spoilage and corrosion. These are NOT the bags for the vacuum sealers similar to the Food Saver or Seal-A-Meal. Those require channel lock bags or tubing. Our Zip Top Vacuum Bags are a perfect fit for your business and budget.