Shield N Seal's Clear and Black Vacuum Sealer Rolls are perfect for long term storage of food and perishables. These rolls are the thickest, BPA free, food grade heat seal rolls. 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. Clear and black plastic vacuum seal rolls 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. The clear plastic is perfect for showcasing your recipes, and has white areas that make it easy to label date and type of meat. You'll be able to easily find what you're looking for as you pull it out of deep storage. Clear and Black construction allows for supreme versatility. Some times people like to be able to see their food through the clear side, and other times, it is better to have your bags be light proof. To protect from light and sun, simply double bag, flipping one bag around. Viola, light proof and double bagged! Don't forget to reuse your rolls! Just trim off the rough edge, and reseal. It's simple to save money by not only saving money on food, but also on the bags themselves. Favored by sous vide chefs, survival preppers, and hydroponic gardeners.