Ziploc® Easy Open Tabs Freezer Gallon Bags (152 ct.) are a surefire way to keep freezer burn out while keeping freshness in. They are a shield against both the damage that is often done by freezers and the escape of that flavor you love so much. What Is It That Makes These Bags So Effective? There are a few different qualities that give Ziploc Double Zipper Gallon Freezer Bags the edge over many other self-closing plastic bags. First, they have the Smart Zip™ seal. This provides both protection and assurance. The protection is supplied by the solid, strong, reliable seal of the locking mechanism. The assurance is due to the unmistakable feeling of the bag being zipped shut. As your fingers finish the run of the closed top, you both know and can feel that it has been successfully closed and your food has been protected. Another feature that puts these bags head and shoulders above the rest is the heavy-duty plastic they are made out of. Because these bags are thick and durable, they are much less likely to get punctured or ruptured by anything stored inside or trying to protrude from the outside. How Do They Keep the Food Fresher? When food is exposed to the air, whether it be inside a refrigerator, a freezer or out in the open, the taste is allowed to diffuse out and away from the food. With Ziploc Easy Open Tabs Freezer Gallon Bags this is not an issue. The flavor cannot get outside of the bag itself. Soon, the chamber created inside the bag reaches a saturation point, and that combined with the natural air pressure inside keeps the taste right where it should be: inside your food. The Benefit of a Double Zipper One seal can often be enough, particularly with the Smart Zip technology. However, twice the seal means twice the protection. Ziploc Easy Open Tabs Freezer Gallon Bags feature a double seal. If the first seal were to be opened up, the second one would come to the rescue.