The perfect blend of EP™ FIBERS to match the hatch! These fibers are based upon close study of baitfish and how they change color in many situations (especially when their predators attack them!). If you want to simulate these naturals color changes EP™ FIBERS 3D will do the trick for you. Certainly these fibers will make the difference in your patterns. EP™ 3-D FIBERS are 10” long.