Scientific Anglers Mastery MPX Fly Line Waterproof Zipper Its low-stretch core and SlickCast

Its low-stretch core and SlickCast coating provide strong hook-setting power and durable casting performance for rivers

The 45-inch format accommodates larger rod configurations including switch and spey rods while still offering organized protection for reels

DWR-coated to offer solid protection against wind and rain without the unnecessary bulk

the Thunderhead Lumbar is built for your next big adventure

4 WF4 100 yds 20# -5+ 3

Scientific Anglers Mastery MPX Fly Line Waterproof Zipper Its low-stretch core and SlickCastThe Scientific Anglers Mastery MPX Fly Line is a versatile all around floating fly line built for anglers who want powerful turnover, smooth casting, and reliable performance across dry flies, nymphs, and streamers. Originally developed as the evolution of the legendary GPX taper, the MPX is built a half size heavy with added front end mass to help load modern fast action rods quickly while still maintaining refined presentation control. Its AST