Hareline McFly Foam - Strong Colorfast Continuous Filament Fly Tying Yarn

Versatile, colorfast fly tying material

Hareline McFly Foam is a strong, stretchy continuous filament material designed for dependable fly tying results. The colorfast dyes resist fading through handling, dry storage, and repeated shaping, helping your favorite patterns stay vibrant from the vise to the water. The material’s refined texture and consistent diameter give you predictable performance across a range of hook sizes and patterns.

Because it is purpose-built for eggs and sculpted patterns, McFly Foam behaves predictably when forming heads, bodies, and sculpted features. It folds cleanly, cuts smoothly, and trims with minimal fraying, allowing you to shape clean lines for sculpins, woolheads, or other lifelike forms. The filament maintains grip on thread without sagging, so your bodies stay compact and well-formed as you wrap.

Handling and feel matter on busy tying benches. McFly Foam offers a tactile, slightly springy character that resists pull-apart while still being easy to wrap and reposition. It provides steady tension as you work, helping you reproduce consistent sizes and profiles, even when patterns require delicate shaping or multiple segments.

Key benefits

• Strong, stretchy filament that ties cleanly and holds knots.
• Colorfast dyes resist fading through handling and time.
• Easy to tie, cut, and trim for eggs and sculpted heads.
• Flexible enough for delicate patterns or larger sculpted bodies.

Use cases and pattern ideas

• Egg patterns and roe bodies for quick, reliable ties.
• Sculpted heads for sculpins and woolheads with defined profiles.
• Bodies with smooth transitions for varied water conditions.
• Broad pattern versatility for nymphs, shrimp, and lifelike shapes.

Consider McFly Foam a dependable part of your fly-tying kit. It invites you to experiment with textures and forms, offering versatility without promising guaranteed results.