Sea DNA lines are extruded from Terpolymer Nylon, which consists of three different types of Nylon. This new blend has the advantage of increased strength and better knot strength compared to the already advanced Copolymer Nylon material. Other characteristics that are due to 3Gen technology are its softness, long lasting life and high abrasion resistance. With Sea DNA you can fish thinner and pull harder. Ideal for big fish with sharp teeth or fishing in water with many obstacles or structures such as snag, rock, twigs weed beds etc.