In an experiment with JAMSTEC, Japan Agency for Marine-Earth Science and Technology, we found that our color was submerged in the deep sea, and as a result, we found that red looks blacker than black.
Red is also said to be the most effective color for collecting fish. It looks black in the deep sea and protects the seabed, and it is a color that has the effect of collecting fish in the depth of light.

The assist line with fluorocarbon makes it harder to get entangled with kinks and hooks.