On first inspection, this innovative new line appears to be another clear fluorocarbon. But when exposed to sunlight, it "transitions" to either a deep gold or crimson red color for maximum visibility outside the water. Below the surface, it truly lives up to its name and literally vanishes into its surroundings. The result is that fish aren’t spooked, and you can detect strikes faster. Built with the same durability and abrasion resistance as other fluorocarbon lines, it’s like having two lines in one. These 250-yd. filler spools are great for filling a couple reels and tying leaders. Available: 4, 6, 8, 10, 12, 14, 17, 20-lb. test. Colors: Gold.