The same product is available on small spools in bead stores for about 3x the price per yard. Terrific for beadwork: doesn't stretch like monofilament, has a little bit of friction to its surface so it doesn't slip out of the needle and square knots don't pull out, and has more structural integrity than silk so the needle can't accidentally go through a strand and get hung up. I do enough needleweaving, gourd-stitch, netting etc. that I will easily use this up. And if not, I'll fish with the rest.
It's whitish, not transparent (I make see-thru raised patterns on some of my beadwork and was looking for a really invisible thread). However, it's pretty thin, especially considering its strength So it's the next best thing to something that doesn't show at all.

Basically, no less opaque than the other colors. This is white and quite visible, although the color may be less offensive than say Green to the fish. Not sure. Anyways, the clarify aspect is overhyped. I've used thousands of yards of Fireline so I feel that I know the line pretty well.

Berkeley Fireline is a technological phenomenon because it might be the diameter of an 8 # test monofilament line, but Fireline will be a 20# test line. This means there are fewer "break offs" and with a 20# test line, the loss of lures to snags is lessened. You just pull the lure free.

This is a finely BRAIDED line, which is the secret of its tremendous strength. Visibility turns out not be a factor. However, if used for toothy fish such as Walleye or Pike or Muskellunge, a good 20# or 30# monofilament leader is an asset. Personally, I use a 40# monfilament leader.

Fireline can be connected to monofilament using a SAN DIEGO KNOT, which permits the connection to retain 95% of its original strength. (Knots are always the weakest link!)

There are other braided lines on the market. Most are quite good.

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