Dry Fly Poly Yarn – Semperfli
Polyyarn has been nicknamed by fly tyers worldwide the ‘floating yarn’. It is so fibrous and beautifully textured, this easy-to-use fly tying material is a must-have for dry fly construction. Dry Fly Polyyarn is a bonded form of polyyarn, a dubbing-on-a-rope product from Semperfli. Its tight fibrous bonding makes it ideal for dry flies. The material naturally floats and its fibrous structure traps air, enhancing buoyancy.
Key Features
- Naturally floats in water
- Fibrous structure traps air for better floatation
- Easy to taper to a point by heating
- Available in mottled black and golden olive for natural color representation
- Durable and suitable for dry fly tying
Specifications
| Feature | Detail |
|---|---|
| Color | Mottled Black & Golden Olive |
| Type | Dubbing on a rope |
| Use | Dry fly tying |
| Material | Bonded polyyarn |
FAQ
Can Dry Fly Polyyarn be used for wet flies?
No, Dry Fly Polyyarn is specifically designed for dry flies due to its natural floatation and fibrous structure. It is not recommended for wet fly construction.
How do I taper the Dry Fly Polyyarn to a point?
Heat the polyyarn gently with a flame or heat source until it softens, then roll it to form a point. This process is simple and effective.
Is the mottled color realistic in natural environments?
Yes, the mottled black and golden olive color provides natural representation of many aquatic insects, making it suitable for imitating real fly patterns.

Ian Bond –
This polyyarn works perfectly for dry fly tying. The floatation is excellent and the mottled color looks very natural. I’ve used it on several patterns and the flies stay afloat well in the water.
Mary Miller –
The material is easy to handle and heats evenly when tapered. I appreciate the consistent texture and the way it holds shape without breaking during tying.
Robert Lewis –
Great for creating realistic dry flies. The color matches well with natural insects. A bit harder to taper than some other materials, but with practice it becomes manageable.
Wanda Grant –
Highly recommended for dry fly tyers. The floating quality is unmatched. I’ve used it on multiple patterns and the flies perform well in still water.