Our original "salt and pepper" line, TUF-Line® is manufactured with Spectra® fibers and has an amazing 4% stretch which translates into super sensitivity and more powerful hooksets when compared to monofilament. TUF-Line® is also hydrophobic, meaning it repels water and won't swell in diameter. TUF-Line® is over 40% smaller than equivalent test monofilaments, which substantially reduces line drag.