Our engineers have worked tirelessly to develop the thickest and strongest vacuum seal bags. They designed this model with a resealable zipper that will allow you to reuse the bag over and over. This makes the sealer bag more environmentally friendly and helps you to save even more money for your family. These black vacuum seal bags fit many lifestyles. We’ve had them tested by homemakers, foodies, survival preppers, and indoor hydroponic gardeners, and the feedback has been overwhelmingly positive. Shield N Seal’s All Black Vacuum Sealer Bags are perfect for long term storage of food and perishables. These bags are the thickest, BPA free, food grade heat seal bags. Studies have shown that properly vacuum sealed food can stay fresh up to 5x longer, sometimes 10x longer. BPA free means that you can cook with confidence. You can sous vide your favorite recipes, boil in bag at any temperature knowing that our materials are food safe. They will not affect the flavor of the food, nor will they leach toxins that will harm your family. Your meal will retain its taste, texture, aroma, and nutritional value. Shield N Seal black plastic vacuum seal bags are perfect for any type of food stuff; meat, chicken, fish, produce, and even coffee, tea, and herbs are kept amazingly fresh when sealed in these bags. We’ve made our new bags stronger and thicker than ever before, making sure that they lock out moisture and air. They reduce freezer burn better than any other bag we’ve tested. And while it locks in flavor, it will also lock in odor. You don’t have to worry about strong smells emanating from a Shield N Seal bag. Pungent food or garden odors are locked in tight, for good. These bags have a unique double seal feature. You can vacuum seal your bag, and then use our zipper closure to open and close your bag over and over again.