Harvest Keeper Black and Clear Sealer Bags keeps garden vegetables, meats and other food products fresh up to 5 times longer than other storage options. Harvest Keeper Black and Clear Sealer Bags, when used properly with a vacuum sealer, provide an airtight seal to keep moisture and air out. These bags save time and money by reducing freezer burn and extending the lifespan of your food. Black and Clear Bags blocks out harmful light while allowing you to see what's inside. Saves space and eliminates odors. Convenient and versatile. Product is BPA-free and is made from FDA-approved food-safe materials. Please follow FDA food safety guidelines. Comes in precut bag sizes 11 in x 18 in and 15 in x 20 in or rolls 11 in or 15 in x 19-1/2 ft.