If you were a fan of Scientific Angler's GPX line and were disappointed when they stopped producing it, fear not. The Wavelength MPX from Scientific Anglers took over where the GPX left off. This half-heavy fly line works great for fishing just about any type of pattern, dry fly, nymph or streamer. The extra weight and aggressive taper means the Wavelength MPX taper fly line turns over streamer and heavy nymph rigs with ease, while still being able to deliver a small dry fly with a subtle presentation. SA-ID for easy line identification Shooting Technology Plus for slickness additive to the coating Welded loops for easy loop-to-loop connection Mastery Textured design for friction reduction.