Costa Del Mar Diego Gray Silver Mirror 580G Matte Black
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Costa Del Mar Diego 580G Performance Sunglasses
The Costa Del Mar Diego represents the next evolution in sport performance eyewear. Built from the water up, Diego combines advanced airflow engineering with Costa's premier 580G polarized glass lens technology to keep you locked in from first light to last cast, whether you are chasing yellowtail or the mighty bluefin.
580G Polarized Glass Lens Technology
The Diego is fitted with Costa's 580G lens, their top-tier polarized glass optic. The "580" designation refers to the lens's ability to filter high-energy visible (HEV) light in the harmful blue and yellow spectrum while enhancing reds, greens, and contrasts that matter most on the water. Glass construction delivers superior scratch resistance, optical clarity, and color fidelity compared to polycarbonate, making it the preferred choice for serious anglers and water sports athletes. The Gray Silver Mirror coating reduces overall light transmission in bright offshore and inshore conditions, cutting glare off the water's surface without distorting natural color. The Base 8 Decentered lens curve wraps the face for peripheral coverage and minimizes optical distortion across the full field of view. All 580G lenses provide 100% UV protection.
Vented Spring Hinge System and Sweat Management
Diego's defining engineering feature is its innovative vented spring hinge. The hinge is designed to maximize airflow through the frame, pulling heat and moisture away from the face during high-output activity. Integrated sweat management channels wick moisture away from the eye area to maintain a clear, comfortable fit through a full day of paddling, fishing, or any on-water pursuit. The spring-loaded mechanism also provides a self-adjusting fit that accommodates a wide range of head sizes without manual adjustment.
Light Leak Elimination and All-Day Fit
Top and side shield details are built directly into the Diego frame to block stray light from entering around the lens perimeter, a critical feature when the sun is low on the horizon or reflecting off the water at sharp angles. The wide XL frame fit is designed for larger face geometries and provides comprehensive coverage without sacrificing airflow. Temple tips are flexible and strap-ready, so the Diego transitions seamlessly from casual wear to secure active use with a compatible retention strap. The nosepad is fixed, keeping the frame stable and eliminating slippage during movement.
Frame Construction
The Diego frame is built with the durability and grip performance expected from a working sport sunglass. The matte finish reduces surface glare on the frame itself, which matters when you need an unobstructed view of a rod tip or water surface. Costa is an American manufacturer of polarized sunglasses with deep roots in fishing culture, building purpose-driven eyewear for serious water enthusiasts.
Available at Island Water Sports
The Costa Del Mar Diego 580G is available in store and online at Island Water Sports. Costa sunglasses are stocked alongside a full selection of fishing, surf, and water sports gear for South Florida and beyond.
Free Shipping, No Minimum for IWS Beach Club Members.
Returns are eligible within 30 days of receiving your order. Return shipping labels are FREE for IWS Beach Club Members. See more
Specifications
- Brand
- Costa Del Mar
- Model
- Diego
- Item No.
- DGO 11 OSGGLP
- Lens Material
- Polarized Glass (580G)
- Lens Color
- Gray Silver Mirror
- Frame Color
- Matte Black
- Frame Fit
- Wide
- Frame Size
- XL
- Lens Curve
- Base 8 Decentered
- Nosepad Adjustable
- No
- UV Protection
- 100%
- Polarized
- Yes
- Strap Compatible
- Yes (strap-ready temple tips)
- UPC
- 097963837668
- MPN
- 210000202083
Frequently Asked Questions
- What is the difference between Costa 580G and 580P lenses?
- 580G lenses are made from glass, which provides superior scratch resistance, optical clarity, and color fidelity. 580P lenses are made from polycarbonate, which is lighter and more impact-resistant but less scratch-resistant. Both filter the same high-energy visible light spectrum and deliver the 580 color enhancement. The Diego 580G is the premium glass option for anglers and users who prioritize optics over weight.
- Are the Costa Del Mar Diego sunglasses polarized?
- Yes. The Diego 580G features fully polarized glass lenses that eliminate glare from horizontal reflective surfaces like water, pavement, and sand. Polarization is built into the lens construction, not applied as a surface coating.
- What does the vented spring hinge on the Diego do?
- The vented spring hinge maximizes airflow through the frame to reduce heat and moisture buildup during active use. It also allows the hinge to flex and self-adjust, providing a secure, consistent fit across a range of head sizes without the frame feeling overly tight.
- Are the Costa Diego sunglasses good for fishing?
- Yes. The Diego was designed specifically with fishing in mind. The polarized 580G lens cuts water surface glare so you can see beneath the surface, the top and side shields eliminate light leak at low sun angles, and the strap-ready temple tips keep the frame secure when you are moving on a boat deck or fighting a fish.
- Can I get replacement lenses for the Costa Del Mar Diego?
- Costa Del Mar offers replacement lenses for many of their frames. Contact Costa directly or visit Island Water Sports in store to confirm current lens replacement availability and compatible lens options for the Diego frame.
- What face shape does the Costa Diego XL fit?
- The Diego is built in a Wide, XL frame designed for larger face geometries. The rectangular wraparound shape suits oval, square, and diamond face shapes that benefit from the broader coverage and angular lines of the frame.
- Does the Costa Diego provide 100% UV protection?
- Yes. All Costa 580G lenses block 100% of UVA, UVB, and UVC rays up to 400nm, regardless of lens color or mirror coating.