Custom F-Series Fender Covers
The Polyform F-Series is the most widely used cylindrical fender on the water — and every model from F-1 to F-10 has its own precision dieline in our library. Your FenderSox™ is pattern-cut to the exact diameter, length, and taper of your specific F-Series model.
Available in custom-printed designs or standard solid colors (Matte Black, Charcoal, Navy). All covers are handcrafted from 5mm neoprene in Palm Beach, Florida.
F-Series Models We Cover
We hold proprietary dielines for every Polyform F-Series model. Select your fender model when submitting your order.
| Model | Size | Common Vessels |
|---|---|---|
| F-1 | 5" × 15" | Dinghies, tenders, small inflatables |
| F-2 | 5.5" × 18" | Small center consoles, bay boats |
| F-3 | 6.5" × 22" | Center consoles, flats boats |
| F-4 | 7.5" × 25" | Center consoles, 20–25 ft boats |
| F-5 | 8.5" × 29" | Sportfishers, cruisers 25–35 ft |
| F-6 | 9.5" × 34" | Mid-size cruisers, sportfishers |
| F-7 | 11" × 38" | Large cruisers, express boats |
| F-8 | 13" × 43" | Large motoryachts, sportfishers 40+ ft |
| F-9 | 15" × 46" | Megayacht tenders, commercial vessels |
| F-10 | 18" × 50" | Large commercial and yacht applications |
Sizes listed are approximate. Your cover is cut to the exact Polyform specifications for each model.
Why Your F-Series Cover Has to Be Precision-Cut
An F-1 and an F-5 are both called "F-Series" fenders, but their diameters differ by more than 3 inches. A universal sleeve that claims to fit multiple F-Series models will be visibly baggy on some and impossible to install on others.
At Flexifabrics, each F-Series model has its own proprietary flat pattern — accounting for body diameter, cylindrical length, end cap curvature, and the 0.5-inch seam allowance at every edge. The result is a cover that installs cleanly and sits flush against the fender body.
Installation in three steps
- 01Deflate your Polyform fender completely.
- 02Slide the FenderSox™ over the deflated fender.
- 03Re-inflate to firm pressure — the neoprene molds to the fender surface.
No tools. No drawstrings. No Velcro. The cover simply will not shift.
Custom Printed or Standard Colors
Custom Printed F-Series Covers
Your boat name, yacht logo, marina crest, or custom artwork printed directly into the neoprene. We create a full digital mockup for your approval before manufacturing. Unlimited design revisions. Payment only after you approve.
Start your custom request →Standard Solid Color F-Series Covers
Available in Matte Black, Charcoal, and Navy. The same precision fit and 5mm neoprene quality — just without custom artwork. Order online, ships within 3 weeks.
Order standard covers →