Freshness that lasts for weeks, not days: BPA-free multilayer design is constructed of durable yet pliable material that creates an airtight barrier around foods, extending freshness and locking in flavors Precut bags offer maximum convenience: quickly and easily portion food from bulk shopping or when storing leftovers. Just add food to the bag, insert the open end in a Food Saver vacuum sealer, and the machine takes care of the rest Ideal for use with Food Saver vacuum sealing systems: The sealing strip in Food Saver vacuum sealers heats to a precise temperature that works specifically with Food Saver bag material, ensuring you get a secure airtight seal Bpa-free material: safe for storing raw and cooked foods, it's also freezer, refrigerator, microwave, and boil safe