Our 7" x 9" 4 Mil Clearzip® Locking Top Bags are used to seal standard weight products and are the most popular thickness for parts, clothing, food storage, and more. 4 mil Clearzip® Locking Top Bags are made from low density polyethylene and can be recycled. Reclosable 7" x 9" .004 plastic bags feature impressive clarity and make storage and organization simple for industrial, food service, and medical industry applications. 7 inch by 9 inch 4 mil Zipper Locking bags meet FDA/USDA requirements for use in food packaging and storage applications.