Scientific Anglers Backing
Ultra-Premium PE Backing

Ultra High Molecular Weight Polyethylene provides a high ratio of strength to diameter. Available in vibrant colours and two strengths.
Features:
- Round weave profile
- Available in 50lb and 65lb breaking strengths
- 65lb Hollow Core can be directly spliced creating a smooth fly line to backing connection
- Vibrant Colorfast process will not bleed
| Strength | Spool size | Colours |
|---|---|---|
| 50lb | 350yd | White or Red |
| 50lb | 2500yd | White or Red |
| 65lb | 350yd | Blue |
| 65lb | 2500yd | Blue |
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XTS Gel-spun Backing

If you’re looking for the best backing available, nothing can beat the XTS premium super-braid. With a diameter a fraction of the standard dacron material, XTS retains its strength in the water, offers extreme abrasion resistance, and can fend off the worst the elements have to offer.
Features:
- Micro-diameter gel-spun polyethelene allows up to 75% greater backing capacity than standard materials
- Retains 100% strength while wet
- High abrasion resistance, high visibility, impervious to UV rays, gas, salt, and other elements
- Smooth coating for low coefficient of friction
| Strength | Diameter | Spool size | Colours |
|---|---|---|---|
| 30lb | 0.014″ | 100yd | Yellow or Blue |
| 30lb | 0.014″ | 250yd | Yellow or Blue |
| 30lb | 0.014″ | 500yd | Yellow or Blue |
| 30lb | 0.014″ | 2500yd | Yellow or Blue |
| 50lb | 0.016″ | 250yd | Yellow or Blue |
| 50lb | 0.016″ | 500yd | Yellow or Blue |
| 50lb | 0.016″ | 2500yd | Yellow or Blue |
| 100lb | 0.019″ | 500yd | Blue |
| 100lb | 0.019″ | 2500yd | Blue |
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Dacron Backing

Backing doesn’t just connect your fly line to your reel, it also provides insurance for those drag-blistering runs of steelhead or bonefish. Our Dacron backing offers a thin diameter, high abrasion resistance, and peace of mind, knowing that the fish of a lifetime won’t be getting away from you this time.
Features:
- Extremely thin, with low friction
- High abrasion resistance
- Colorfast, with high visibility
| Strength | Diameter | Spool size | Colours |
|---|---|---|---|
| 20lb | 0.018″ | 100yd | White, Yellow or Orange |
| 20lb | 0.018″ | 250yd | White, Yellow or Orange |
| 20lb | 0.018″ | 5000yd | White, Yellow or Orange |
| 30lb | 0.024″ | 100yd | White, Yellow or Orange |
| 30lb | 0.024″ | 250yd | White, Yellow or Orange |
| 30lb | 0.024″ | 5000yd | White, Yellow or Orange |
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Specialty Coloured Dacron Backing

Backing doesn’t just connect your fly line to your reel, it also provides insurance for those drag-blistering runs of steelhead or bonefish. It works hard. Now let it look good. Our Dacron backing offers a thin diameter, high abrasion resistance, and peace of mind, knowing that the fish of a lifetime won’t be getting away from you this time.
Features:
- Extremely thin, low coefficient of friction, high abrasion resistance and colorfast
- Available in a variety of unique colors
- Includes both vibrant and stealthy offerings
| Red | Blue | Optic Green | Black | Size | Total Length | Diameter | |
| 119405 | 119399 | 119429 | – | 20lb / 9.1kg | 100yd / 91.4m | .018″/.46mm | |
| 125949 | 125918 | 125925 | 125901 | 20lb / 9.1kg | 5000yd / 4572.0m | .018″/.46mm | |
| 126014 | 125987 | 125994 | 125970 | 30lb / 13.6kg | 5000yd / 4572.0m | .024″/.61mm |
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