Made with a flat wire, rather than the traditional round wire. The flat wire provides a thicker tab, resulting in a heavier closure which is preferred in some markets. The aluminum wire features "Puncture Proof Tabs," so the wire ends are completely covered, eliminating any sharp, cutting, exposed edges. The aluminum will not rust when coming in contact with water or other liquids.

Resins used in the extrusion of film for Whirl-Pak® Bags are FDA approved. Bags are manufactured in accordance with the requirements for manufacturers of single service containers for milk and milk products. Capacity is measured in fluid ounces when bag is closed and tab folded over three times. Volume and dimensions are approximate; bags should not be used at temperatures above 180°F (82°C).