.jpg)
The World's Best Synthetic Fly Tying Materials
Semperfli creates the world’s best synthetic fly tying materials.
Engineered in Britain and trusted by fly tiers worldwide, our materials are designed to deliver unmatched strength, consistency, and control at the vise.
At Semperfli we combine advanced synthetic fibres with obsessive quality control to produce fly tying threads and materials that perform exactly as intended, every wrap, every fly, every time. From ultra-strong Nano Silk GSP threads to precision-dyed synthetics, Semperfli materials are built to lay flatter, tie cleaner, and last longer than conventional alternatives. Unlike generic or commodity fly tying materials, Semperfli products are developed by fly tiers, for fly tiers. Every material is tested for real-world tying performance, colour accuracy, durability, and repeatability—because consistency matters as much as innovation.
Whether tying delicate micro dries, rugged saltwater patterns, or classic salmon flies, fly tiers choose Semperfli for confidence at the vise and reliability on the water.
Semperfli — the world’s best synthetic fly tying materials.
Semperfli's Brand Pillars
Innovation: We are innovators creating market leading materials from fly tying threads dubbings like Kapok and Fritz Chenilles from metallic to Straggles
Performance First: Materials designed to outperform traditional alternatives in strength, handling, and longevity.
Precision & Consistency: Exact deniers, controlled dye processes, and repeatable results across every spool and batch.
Fly Tier Led Innovation: Developed and tested by experienced fly tiers, not commodity manufacturers.
Global Trust: Chosen by professional and home fly tiers across trout, salmon, predator, and saltwater disciplines worldwide.