Cortland Micron Backing Fly Fishing, Black 250 YDS, 20lb

Cortland Micron is the standard by which all fly line backing has been judged for more than 50 years. World famous for its tight, round braid, smooth low-friction finish and stretch-resistant performance, Micron is manufactured from premium Dacron fibers. Unlike looser, flat braids, Micron comes with zero twist, is virtually tangle-free and knots perfectly every time. Ask any fly angler who sees their backing more than most, and they’ll tell you they use Micron — every time.

• The Industry Standard for Over 50 Years – Trusted by fly anglers worldwide for reliability, durability, and consistent performance.
• Premium Dacron Construction – Made from high-quality fibers for strength, longevity, and smooth handling.
• Tight, Round Braid – Delivers a low-friction, tangle-resistant finish that knots cleanly and seats securely.
• Zero Twist & Virtually Tangle-Free – Unlike flat or loose braids, Micron remains smooth, manageable, and easy to spool.
• Proven by Hardcore Anglers – The go-to choice for serious fly fishers who regularly put their backing to the test.