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The Costa Del Mar Harpoon 9040 Sunglasses deliver serious performance for anglers and water sports enthusiasts who demand optical excellence. Built around Costa's legendary 580 lens technology, these polarized sunglasses don't just cut glare—they fundamentally improve what you see on the water by filtering out harsh yellow light at 580 nanometers and blocking 100% of UV and high-energy blue light. The result is enhanced color, sharper contrast, and reduced eye fatigue during long days in the sun.
Costa 580 Lens Technology: Built for the Water
Available in both 580P polycarbonate and 580G glass versions, the Harpoon's lenses represent decades of Costa's optical innovation. The 580P polycarbonate lenses are lightweight and impact-resistant, protected by Costa's C-Wall coating for scratch resistance and easy cleaning of water, oil, and sweat. The 580G glass lenses are 20% thinner and 22% lighter than average polarized glass, offering superior clarity while remaining durable enough for demanding conditions. Both versions provide 99.9% polarization efficiency to eliminate surface glare and reveal what's beneath the water.
The mirrored lens options you see here—vibrant green and blue—aren't just for looks. They add an extra layer of light management in bright conditions while the underlying 580 technology boosts reds, greens, and blues for better definition and color saturation.
Designed for Performance and All-Day Comfort
The Harpoon features a lightweight TR-90 nylon frame (62mm lens width, 18mm bridge, 130mm temples) with an oval wrapped shape that provides maximum coverage and reduces light leak from the sides. The frame is injected with Hydrolite rubber at the nose pads and temple tips—this grippy material actually increases traction when wet, so the sunglasses stay put during active fishing, kayaking, or running. Stainless steel spring hinges flex to fit your face and move with you during high-intensity activities.
Costa designed the Harpoon with a small to medium lens front for those with slightly narrow to average head sizes. The wrapped profile hugs your face for secure, comfortable wear without pressure points. Reviewers consistently note the Harpoon is one of the most comfortable Costa models for extended wear, and the bio-based resin used in the TR-90 frames reflects Costa's commitment to reducing their carbon footprint.
These sunglasses are built to handle saltwater, sand, and sun. The full-rim acetate construction is durable enough to earn Costa's reputation for toughness, and the 100% polarized lenses with UV protection meet the demands of serious anglers who spend hours scanning the water. Whether you're sight-fishing flats, running offshore, or just need reliable eye protection for any outdoor adventure, the Harpoon 9040 delivers the optical performance and durability Costa is known for.
Product Details
Product DetailsModel
06S9040Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsColor Code
904005Color Description
10 TortoiseLens Color
Green Mir 580p
Color Code
904006Color Description
11 Shiny BlackLens Color
Blue Mir 580p
Color Code
904008Color Description
10 TortoiseLens Color
Blu Mir 580g
Color Code
904003Color Description
11 Shiny BlackLens Color
Gray 580pLens Features
polarized
Color Code
904010Color Description
10 TortoiseLens Color
Green Mir 580gLens Features
polarized
Color Code
904011Color Description
11 Shiny BlackLens Color
Blu Mir 580gLens Features
polarized
Color Code
904013Color Description
11 Shiny BlackLens Color
Green Mir 580g
Size Details
Size DetailsSize
6218-130
Size
6218-130
Size
6218-130
Bridge Width
18.00Temple Length
130.00Size
6218-130
Bridge Width
18.00Temple Length
130.00Size
6218-130
Bridge Width
18.00Temple Length
130.00Size
6218-130
Bridge Width
18.00Temple Length
130.00Size
6218-130
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Authentic Costas at a third of the price as magor retailers.... fast shipping! I'll definitely buy from here again!!!!
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Frequently Asked Questions
Are Costa Harpoon sunglasses available with prescription lenses?
While the Costa Harpoon 9040 frame itself is not designed to accept prescription lenses directly, you can get prescription lenses installed through specialty optical retailers like SportRx who offer Costa prescription sunglasses. Alternatively, several aftermarket companies offer prescription replacement lenses that fit the Harpoon frame. Contact us to discuss prescription options for your specific needs.
What's the difference between Costa 580P and 580G lenses?
Costa 580P lenses are made of lightweight, impact-resistant polycarbonate with a C-Wall scratch-resistant coating, making them ideal for active sports and everyday wear. Costa 580G lenses are glass—20% thinner and 22% lighter than average polarized glass—offering superior optical clarity and scratch resistance. Both provide the same 580 color-enhancing technology, 100% UV protection, and 99.9% polarization efficiency. Glass is heavier but clearer; polycarbonate is lighter and more impact-resistant.
What size head do Costa Harpoon sunglasses fit?
The Costa Harpoon 9040 is designed with a small to medium lens front (62mm lens width, 18mm bridge) to fit those with slightly narrow to average head sizes. The wrapped profile provides maximum coverage while the spring hinges help the frame flex to fit comfortably. If you need a larger fit, consider the Costa Brine or Fathom models which offer medium to large sizing.
How does Costa 580 lens technology work?
Costa 580 technology filters out harsh yellow light at 580 nanometers on the visible light spectrum, which typically distorts clarity and contrast. It also blocks 100% of UV light and absorbs high-energy blue (HEV) light that can cause eye strain and long-term damage. By removing these wavelengths, the 580 lens naturally boosts reds, greens, and blues, resulting in enhanced color saturation, sharper contrast, and better definition—especially important for seeing into water.
Are Costa Harpoon sunglasses good for fishing?
Yes, the Costa Harpoon is specifically designed as a fishing and water sports sunglass. The polarized 580 lenses cut glare from water surfaces and enhance underwater visibility, while the Hydrolite rubber nose and temple pads provide a secure, non-slip grip even when wet. The wrapped frame design reduces light leak, and the lightweight TR-90 nylon construction is durable enough to handle saltwater, sand, and demanding conditions on the water.
What comes with Costa Harpoon sunglasses?
Authentic Costa Harpoon sunglasses come with a protective case, cleaning cloth, and Costa's limited warranty. All Costa lenses have a faint '580' etched in the upper right lens near the hinge to verify authenticity. The sunglasses feature 100% UV protection, polarized lenses, and Costa's C-Wall coating on polycarbonate versions for scratch and smudge resistance.
Compare With Similar Frames
How the Costa Del Mar Harpoon 9040 Sunglasses stacks up against the closest alternatives we carry.
- Larger fit for medium to large head sizes
- Full Hydrolite temples provide maximum grip and comfort
- Same 580 lens technology and polarization
- Medium fit works for a wider range of face sizes
- Hydrolite nose and temple pads prevent slippage
- Same 580 technology and biodegradable TR-90 frame
Read the full comparison
Costa Harpoon vs Brine vs Fathom: Which Fishing Sunglass Fits You?
Costa's core fishing lineup—the Harpoon, Brine, and Fathom—all share the same legendary 580 lens technology, polarized performance, and durable TR-90 nylon construction. The key difference is fit and coverage.
The Harpoon 9040 is designed for small to medium faces with a 62mm lens width and 18mm bridge. Its wrapped oval profile provides maximum coverage and reduces light leak, while the compact size makes it one of the most comfortable Costa models for extended wear. The Hydrolite nose and temple pads keep it secure during active fishing or water sports.
The Brine 9017 steps up to a larger fit for medium to large head sizes. It features full Hydrolite temples (not just pads) for maximum grip and is built for extreme anglers who need a sunglass that won't budge in demanding conditions. If the Harpoon feels too snug, the Brine is your next step up.
The Fathom 9058 sits in the middle with a medium fit that works for a broader range of face sizes. It has Hydrolite pads on the nose and temples like the Harpoon but with slightly more coverage. It's a versatile choice if you're between sizes.
Our recommendation: If you have a narrow to average face and want the most secure, wrapped fit with minimal light leak, the Harpoon is your best choice. It's lighter and more compact than the Brine or Fathom, making it ideal for all-day wear whether you're fishing, kayaking, or running. All three models deliver the same exceptional 580 optical performance—choose based on your fit preference.
At a Glance
Costa Del Mar Brine 9017 Sunglasses
Pros:
- Larger fit for medium to large head sizes
- Full Hydrolite temples provide maximum grip and comfort
- Same 580 lens technology and polarization
- Designed for hardcore, extreme fishing conditions
Cons:
- Heavier and bulkier than the Harpoon
- May be too large for those with narrow faces
- Higher price point ($153.75–$285 vs $179–$273 for Harpoon)
Costa Del Mar Fathom 9058 Sunglasses
Pros:
- Medium fit works for a wider range of face sizes
- Hydrolite nose and temple pads prevent slippage
- Same 580 technology and biodegradable TR-90 frame
- Excellent balance of coverage and comfort
Cons:
- Not as compact as the Harpoon for smaller faces
- Similar price range ($201–$285)
- Less wrapped profile may allow more light leak than Harpoon