Costa Del Mar Tuna Alley Sunglasses
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Built for the Water, Named for the Migration
The Costa Tuna Alley takes its name from a legendary 15-mile stretch of sand cutting through the deep blue Bahamian waters where Bluefin tuna migrate north. Costa engineered these performance fishing sunglasses to reveal exactly what is happening beneath the surface, giving anglers a clear window into the underwater fish highway that made the Tuna Alley famous.
The result is a wraparound sport frame built around two priorities: optical clarity that penetrates glare and water surface reflection, and a construction rugged enough to survive a full day on the water without compromise. These are tools first, sunglasses second.
Frame Construction
The Tuna Alley frame is molded from tough nylon, the same class of material Costa relies on across its performance fishing lineup. Nylon is light, flexible under impact, and resistant to salt, UV exposure, and the general abuse of life on the water. The frame profile is a full wraparound sport shape that blocks peripheral light and wind without restricting field of view.
Integral hinges are built directly into the frame, eliminating the separate hinge hardware that can loosen, corrode, or snag line. This construction keeps the profile low-profile and the hinge point strong across years of daily use.
A patented vent system is cut into the lower frame. The vents break up heat buildup behind the lens and reduce fogging when moving between warm air and cool water, keeping vision clear during the moments that matter most.
The frame carries a Regular fit and is prescription-ready, meaning the frame is compatible with custom Rx lens orders through Costa's prescription program.
580P vs 580G: Choosing Your Lens
The Tuna Alley is offered in two of Costa's core lens technologies. Both are polarized and built on Costa's 580 platform, which filters High Energy Visible (HEV) light in the 380-520nm range to sharpen contrast and reduce eye fatigue over long hours on the water. The difference is the lens material.
| Feature | 580P (Polycarbonate) | 580G (Glass) |
|---|---|---|
| Lens material | Polycarbonate | Optical glass |
| Weight | Lighter | Heavier |
| Optical clarity | Excellent | Superior (glass benchmark) |
| Impact resistance | Higher | Standard |
| Scratch resistance | Good | Higher (inherent to glass) |
| Best for | Active fishing, kayak, surf, extended wear | Maximum clarity, offshore and flats fishing |
580P Reader Variant
The Tuna Alley is also offered with 580P polycarbonate lenses in a +2.50 reader configuration, making it a practical choice for anglers who need reading magnification for knot tying, tackle, and chart reading without giving up polarized sun protection.
Polarized Lens Performance
All Tuna Alley lenses are polarized. Polarization cuts horizontally oriented glare off flat water surfaces, the primary obstacle to seeing into the water column when fishing. Costa's 580 platform goes further by blocking specific wavelengths of blue light that scatter and reduce contrast in bright conditions. The combination makes it significantly easier to spot fish, structure, and bottom composition under varying light and water conditions.
Shop the Tuna Alley at Island Water Sports
Island Water Sports carries the Costa Del Mar Tuna Alley in store and online. Our South Florida location puts us close to the flats, reefs, and offshore water that these lenses are built for. If you have questions about lens choice or fit, call us at 954-427-4929.
Free Shipping, No Minimum for IWS Beach Club Members.
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Specifications
- Brand
- Costa Del Mar
- Model
- Tuna Alley
- Frame Material
- Nylon
- Frame Fit
- Regular
- Hinge Type
- Integral (built into frame)
- Vent System
- Patented
- Lens Platform
- Costa 580 (polarized)
- Lens Options
- 580P (polycarbonate) / 580G (glass)
- Polarized
- Yes
- Prescription Ready
- Yes
- Reader Option
- 580P +2.50
- Gender
- Men's
- MPN
- itemMatrix-5636
Frequently Asked Questions
- Are Costa Tuna Alley sunglasses polarized?
- Yes. All Costa Tuna Alley lenses are polarized and built on the 580 platform, which blocks glare off flat water and filters high-energy visible light in the 380-520nm range to enhance contrast and reduce eye fatigue.
- What is the difference between 580P and 580G lenses on the Costa Tuna Alley?
- 580P uses polycarbonate: lighter, more impact-resistant, and well-suited for active on-water use. 580G uses optical glass: heavier but delivers the highest optical clarity Costa offers, with superior scratch resistance. Both are polarized on the same 580 platform.
- Does the Costa Tuna Alley come with reader lenses?
- Yes. The Tuna Alley is offered in a 580P +2.50 reader configuration, providing built-in reading magnification alongside full polarized sun protection.
- Are Costa Tuna Alley sunglasses prescription-ready?
- Yes. The frame is compatible with Costa's prescription lens program. Contact Costa or your optician for Rx options in this frame.
- What is the Costa Tuna Alley named after?
- The Tuna Alley is named for a legendary 15-mile stretch of sand through the deep blue Bahamian waters where Bluefin tuna migrate north. Costa designed the frame to reveal the underwater fish highway that made that stretch famous.
- Can I get replacement lenses for the Costa Tuna Alley?
- Costa offers replacement lenses for many of their frames, including the Tuna Alley. Contact Costa Del Mar directly or visit Island Water Sports for options.
- What makes the Costa Tuna Alley good for fishing?
- The Tuna Alley combines polarized 580-platform lenses that cut water glare and sharpen contrast, a wraparound nylon frame with integral hinges for durability, and a patented vent system that reduces fogging during active fishing. It is prescription-ready and offered in a reader variant for added versatility on the water.