Quick Verdict
The Fantail 580P is the fishing pair I reach for first. The 580P polycarbonate lens cuts glare on water as effectively as glass at half the weight, and the bayonet temples lock onto your head during fast boat runs. Side shields on the temple block off-angle glare a normal frame misses. The blue mirror coating shows fingerprints, and the spring hinge feels slightly stiff out of the box, but a season of use loosens it nicely.
Six Months of Real Wear
The Fantail spent the season on kayak trips, pier mornings, and a guided boat day. Salt spray never marked the frame, and the lens cleaned to streak-free with the bundled bag.
Who Should Buy
Anglers, kayakers, and boaters who want serious water performance without the Maui Jim price. Skip if you need a fashion frame for evenings.
Value
At $189 the Costa Del Mar Fantail 580P is the right Sunglasses in 2026.
Costa Del Mar Fantail 580P vs. the competition
| Product | Our rating | Price | Verdict |
|---|---|---|---|
| Maui Jim Peahi Polarized | - | - | Compete - Maui Jim wins on absolute clarity; Costa wins on weight and price. |
| Oakley Holbrook Polarized | - | - | Different - Holbrook is a street-sport pair; the Fantail is purpose-built for water. |
| Ray-Ban Aviator RB3025 | - | - | Pick Costa - If you actually fish, side shields and 580P beat the open Aviator design. |
| Knockaround Premiums Sport | - | - | Skip - Knockaround is fine for a cooler-side beer, not a serious angler frame. |
Full specifications
| Lens Material | 580P polycarbonate |
| Frame Material | Co-injected nylon |
| Lens Width | 59mm |
| Bridge Width | 14mm |
| Temple Length | 127mm |
| Uv Protection | 100% UVA / UVB |
| Weight | 27g |
Should you buy the Costa Del Mar Fantail 580P?
The Fantail 580P is the fishing pair I reach for first. The 580P polycarbonate lens cuts glare on water as effectively as glass at half the weight, and the bayonet temples lock onto your head during fast boat runs. Side shields on the temple block off-angle glare a normal frame misses. The blue mirror coating shows fingerprints, and the spring hinge feels slightly stiff out of the box, but a season of use loosens it nicely.
Frequently asked questions
What does 580P mean?+
580P is Costa's polycarbonate lens, offering glare cut and color enhancement in a lighter, drop-resistant package compared to 580G glass.
Is the fit good for a wide face?+
Yes, the 127mm temple length and flexible nylon frame fit wider faces comfortably.
Will it float?+
No, the Fantail sinks. Add a Costa floating retainer if you boat often.
📅 Update log
- May 14, 2026Published after 6-month test.
Taylor Quinn
Taylor Quinn writes for The Tested Hub.