The line is the product of RIO's new SlickShooter Process and incorporates a supple coldwater, super slick, self-lubricating, dirt resistant coating on a nylon multifilament core. This is the perfect line for wet or dry fly fishing. RIO has included a welded loop on the front end of the fly line to facilitate changing leaders. In all our tests we have found excellent turnover and presentation with this loop. When landing fish it slides through the rod guides more easily than the customary nail knot. Traditionalists can cut this loop off and not compromise the taper.