Berkley FireLine is unlike anything you've fished before. It's stronger than monofilament. It casts farther and it handles as well, even better in some situations. FireLine doesn't create birds nests by digging into your spool for smoother casts, and hassle free use. FireLine is as durable as it is versatile. It won't deteriorate over a lifetime as ultra-light rays or sunlight won't affect it. No other line delivers this combination of easy handling, castability, super strength and sensitivity. And no tackle box should be without it.