RIO’s Mainstream Striper fly lines are made specifically for striped bass and cold water saltwater anglers. The line taper is quick-loading and easy casting, and is suited for a variety of fly sizes from large baitfish imitations to small crab patterns. The lines are intermediate density, sinking at 1.5 to 2 inches per second, are entirely clear for stealth while fishing, and also include a neat welded loop on the front end for fast rigging. Each Mainstream line is made in RIO’s Idaho manufacturing facility.