Extremely small diameters for improved casting distance and feedback. A Hi-Vis fluorocarbon coating results in a extremely visible line out of the water that becomes virtually invisible to the fish underwater. Our blend of premium polymers results in a very strong line that will withstand under extreme stress. Hi-Vis Fluoro has a faster sink rate than monofilament lines making this a perfect choice for jigging, cranking, trolling and a variety of other techniques. Ultra-low memory construction makes this an elite choice for all techniques, especially ultra-light spinning tackle. If you are tired of fighting with your fishing line all day then "DON'T WHINE AND THROW K9!" K9 Hi-Vis Fluoro is possibly the best casting, strongest, fluorescent co-polymer on the market! An extremely good choice for anytime line visibility, abrasion resistance, and castability are needed! Crappie, Bass, Walleye, Panfish and a myriad of other types of anglers have had success day AND night using our Hi-Vis Fluoro.