If fishing or boating is the main reason you buy sunglasses, the Fantail PRO is the pair to get. Costa's polarized 580 glass is very clear and scratch-resistant, the green mirror is tuned for inshore and flats, and the wraparound frame blocks side glare. It's expensive and heavier than polycarbonate, and the Amazon rating sample is small.
Check price #ad About $309 on Amazon when checked Oct 22, 2026
Key specs
| Spec | Detail |
|---|---|
| Lens | Costa 580G polarized mineral glass |
| Tint | Green mirror (other options sold) |
| UV protection | 100% UV |
| Frame | Co-injected nylon with bio-resin |
| Fit | Wide face, wraparound |
| Extras | Case and cleaning cloth |
| Best for | Inshore, flats and boating |
Pros and cons
Pros
- 580 glass is very clear and scratch-resistant
- Green mirror tuned for inshore and flats
- Wraparound shape blocks side glare
- Case included
Cons
- Expensive
- Glass is heavier than polycarbonate
- Small Amazon rating sample
Overview
Costa built its reputation on the water, and the Fantail PRO is a fishing-first frame. It pairs Costa's 580G polarized glass lenses with a wraparound sport frame designed to block glare from every angle.
This review is research-based. We compared Costa's specs, expert guidance and owner reviews. ShadeTrek did not test the sunglasses.
Lens: 580 glass and polarization
Costa's 580 lenses are named for their approach to filtering yellow light around 580 nanometers, which the brand says improves color and contrast. The "G" means mineral glass, which Costa describes as its clearest and most scratch-resistant option. Polarization cuts the horizontal glare bouncing off water, which is what lets anglers see fish, weeds and structure below the surface.
The green mirror tint is aimed at inshore and flats fishing, where you want contrast in bright, shallow water. For deep offshore water, Costa generally suggests blue mirrors, and for low light, lighter copper or sunrise tints. Our lens color guide explains the choices.
Frame and fit
The rectangular frame is made from co-injected nylon with bio-resin and wraps enough to cut glare from the sides, which matters on a boat when light comes from every direction. It's a wide-face fit. If you have a narrower face, check the frame width numbers and see our guide to sunglasses for your face shape.
Glass vs polycarbonate
Glass offers excellent optical clarity and scratch resistance, but it's heavier, and it can crack or chip from a hard impact. Polycarbonate lenses are lighter and more impact-resistant but scratch more easily. For long days on the water with lots of cleaning, many anglers prefer glass.
Choosing a lens color
- Green mirror: inshore, flats and shallow water in bright sun. This is the Fantail PRO's signature option.
- Blue mirror: offshore and open water in bright sun.
- Copper or gray: all-round use, including driving.
- Sunrise silver or lighter tints: low light, early mornings and overcast days.
If you fish both shallow and deep water, consider which you do most, since glass lenses aren't designed to be swapped by the owner.
Care
Rinse salt off with fresh water after every trip, dry with the included cloth, and store in the case. Glass resists scratches well, but a drop onto a boat deck can still chip or crack it, so a retainer leash is a smart add-on.
Who it's for
Anglers and boaters who spend long hours on bright water and want to see into it, especially inshore and on the flats.
Who should skip it
Anyone who rarely fishes or boats, people who want the lightest pair possible, and narrow faces, since the Fantail PRO is a wide frame.
What owners say
The Amazon listing has a small sample (3.7 stars from 25 ratings when we checked on Oct 22, 2026), so it's not a reliable average on its own. Themes across Amazon and retailer reviews:
- Clarity on the water: owners frequently praise how well they see into the water.
- Glare control: the wraparound fit is often mentioned positively.
- Price: a common sticking point.
- Seller concerns: some low ratings relate to listings and sellers rather than the glasses, so buy from Costa's authorized storefront.
- Weight: a few owners notice the glass weight on long days.
Alternatives
- Costa Tuna Alley 580G: our offshore pick.
- Smith Guide's Choice: a big-coverage alternative.
- HUK Spearpoint: a mid-priced option.
- KastKing Skidaway: polarized on a budget.
New to fishing? Start with bass fishing for beginners.
Bottom line
If fishing or boating is the main reason you buy sunglasses, the Fantail PRO is the pair to get. Costa's polarized 580 glass is very clear and scratch-resistant, the green mirror is tuned for inshore and flats, and the wraparound frame blocks side glare. It's expensive and heavier than polycarbonate, and the Amazon rating sample is small.
Check price #ad About $309 on Amazon when checked Oct 22, 2026
FAQ
Is the Costa Fantail PRO 580G worth it?
If fishing or boating is the main reason you buy sunglasses, the Fantail PRO is the pair to get.
Who should buy the Costa Fantail PRO 580G?
Anglers and boaters who spend long hours on bright water and want to see into it, especially inshore and on the flats.
Who should skip the Costa Fantail PRO 580G?
Anyone who rarely fishes or boats, people who want the lightest pair possible, and narrow faces, since the Fantail PRO is a wide frame.
What are the downsides of the Costa Fantail PRO 580G?
Expensive; Glass is heavier than polycarbonate; Small Amazon rating sample.
Did ShadeTrek test this product?
No. This review is research-based, using manufacturer specs, expert guidance and owner reviews.
Sources
This review is research-based. ShadeTrek has not tested this product; our score and summary come from manufacturer specs, expert guidance and owner reviews on Amazon and other retailers. Owner themes are summarized, not quoted. Prices and ratings change; the Amazon link is an affiliate link (#ad).