Extend the shelf life of sensitive items like pharmaceutical products, dry mixes, photographic materials, foods, and coffee. Metalized polyester and linear low-density polyethylene are exceptional barriers against gas, moisture, and odors, and light. Strong 3/8" wide seals on three sides. Meets FDA and USDA specifications for food contact. Tape, vacuum, or heat seal to close. Call for details about custom styles, sizes, and printing.