Costa Del Mar Diego 580G Polarized Fishing Sunglasses

The Costa Del Mar Diego 580G Polarized Fishing Sunglasses combine Costa’s premium glass lens technology with a large, high-coverage performance frame built for serious days on the water.

Designed for anglers who demand maximum coverage, secure fit and superior optical clarity, the Diego features an XL, wide-fit frame with a Base 8 wraparound design. The close-fitting profile helps limit unwanted sunlight entering around the lenses, making the Diego particularly well suited for bright offshore and coastal environments.

What separates the Diego from a basic wraparound fishing frame is its focus on ventilation and moisture management. Costa incorporates a vented spring-hinge system and sweat-management channels to improve airflow and help manage moisture during long days in hot, humid conditions.

Pair that performance-focused frame with Costa 580G polarized glass lenses, and the Diego becomes a premium fishing sunglass designed for anglers who prioritize optical clarity and all-day on-water performance.

Costa 580G Polarized Glass Lenses

Costa’s 580G glass lenses represent the brand’s premium optical platform, delivering exceptional clarity, polarization and scratch resistance.

Costa’s 580 technology is engineered to cut glare while filtering harsh yellow light and managing high-energy blue light. By enhancing reds, greens and blues, the lenses improve contrast and definition in bright, reflective environments.

For anglers, that enhanced clarity can make it easier to distinguish changes in water, structure, weed lines, bottom contours and other visual details while fishing.

The glass construction provides superior scratch resistance and exceptional optical clarity, while Costa's C-WALL® coating adds additional protection and helps repel water, oil and sweat.

Performance Fishing Frame

The Diego uses a Base 8 Decentered lens curve with a high-wrap profile designed to provide maximum coverage.

Top and side shielding helps reduce peripheral light leakage, an important advantage when spending hours around intensely reflective open water.

The frame's XL size and wide fit make the Diego especially well suited for anglers with larger or wider faces who struggle to get proper coverage from standard-size fishing sunglasses.

Ventilation & Sweat Management

Long days fishing in Florida mean heat, humidity and sweat.

The Diego incorporates a vented spring-hinge system designed to promote airflow, along with integrated sweat-management channels that help move moisture away from the face.

Flexible temple tips help maintain a secure, comfortable fit during active use and are strap-ready for additional security on the boat.

Features

• Premium Costa 580G polarized glass lenses
• Exceptional optical clarity
• Superior scratch resistance
• Costa 580 color-enhancing technology
• 100% UV protection
• C-WALL® lens coating
• XL performance fishing frame
• Wide fit
• Base 8 Decentered wraparound design
• Maximum coverage
• Top and side shielding
• Vented spring-hinge system
• Integrated sweat-management channels
• Flexible, strap-ready temple tips
• Designed for serious fishing and boating

Size & Fit

Size: XL
Fit: Wide
Frame Width: 140 mm
Lens Width: 61.7 mm
Lens Height: 46 mm
Bridge Width: 14 mm
Temple Length: 113 mm
Lens Curve: Base 8 Decentered

Best For

• Offshore Fishing
• Inshore Fishing
• Open-Water Fishing
• Boating
• Long Days on the Water
• Bright & Reflective Conditions
• Hot & Humid Conditions
• Anglers with Larger or Wider Faces

Why Choose 580G?

For anglers who prioritize optical clarity and scratch resistance, 580G is Costa's premium choice.

Compared with 580P polycarbonate, glass is heavier, but the tradeoff is excellent clarity and significantly greater resistance to everyday scratching. For serious anglers who take care of their sunglasses and want Costa's best visual performance, 580G is the lens we'd choose.

Premier Tackle Take

The Diego 580G is a serious fishing setup.

You get the maximum coverage of an XL Base 8 frame, ventilation and sweat-management features designed for long days on the water, plus Costa's premium glass optics.

For our offshore customers—especially anglers spending hours in intense Gulf Coast sun—the combination of coverage, ventilation and 580G clarity makes the Diego a strong choice.

It's also one we'd immediately show a customer who likes Costa's full-wrap fishing frames but needs a larger, wider fit.

Premier Tackle — We Carry What Works.