Costa Del Mar King Tide 6 9112 Sunglasses
Costa Del Mar King Tide 6 9112 Sunglasses
$305.60

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Costa Del Mar King Tide 6 9112 Sunglasses

911201 - Black - Blue Mirror

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DESCRIPTION RATINGS & REVIEWS PRESCRIPTION GUIDE

The Costa Del Mar King Tide 6 9112 Sunglasses represent the pinnacle of fishing eyewear engineering. Unveiled at ICAST 2023 and immediately awarded Best of Category for Eyewear, these prescription-ready sunglasses are the result of four years of development—far beyond Costa's typical 14-18 month design cycle. They're built for serious anglers who demand uncompromising performance on the water and versatile style on land.

The King Tide Story: 40 Years in the Making

Named after the rare astronomical event where Earth and moon align to create exceptional tides and once-in-a-lifetime fishing opportunities, the King Tide 6 delivers exactly that advantage. This is Costa's most thoroughly engineered frame to date, synthesizing every innovation from their 40-year history into one flagship model. The medium 6-base wrap offers a more relaxed West Coast aesthetic compared to its full-wrap King Tide 8 sibling, making it ideal for anglers who want serious fishing performance without an overly aggressive look.

Costa 580G Lens Technology: Unmatched Clarity

At the heart of these sunglasses sits Costa's legendary 580G glass lens technology. These aren't ordinary polarized lenses. The 580 system filters harmful light at 580 nanometers on the visible spectrum—blocking harsh yellow light while boosting reds, greens, and blues for superior color contrast and definition. The result? You see fish, structure, and changes in water depth that others miss. Costa's LightWave glass construction makes these lenses 20% thinner and 22% lighter than average polarized glass, with scratch resistance that outlasts polycarbonate. Every lens provides 100% UV protection and 100% polarization to cut glare and protect your eyes during long days on the water.

Performance Features Built for Anglers

The removable side shields are the King Tide 6's signature feature. Snap them on for maximum light-blocking on the water—they prevent peripheral glare and backside reflections that compromise your ability to sight fish. Remove them for a cleaner look at the dock or around town. Integrated into the shields and throughout the frame is a shark gill-inspired venting system that achieves what Costa calls a "near impossible zero-fog effect." Sweat management channels along the temples actively move moisture away from your face, while adjustable vented nose pads provide both airflow and a customizable fit.

The bio-resin frame construction uses castor oil-based material for excellent strength at low weight. Hydrolite rubber grips on the temples and nose pads ensure the frames stay put when you're sweating, running rough water, or fighting fish. Non-skid hooding means these sunglasses won't slide off your console or dashboard—a small detail that prevents costly scratches. Keeper slots on the temple tips accept the included retention system, so you can secure them when not in use.

"These might be the best pair of fishing sunglasses I have ever worn." — AllOutdoor reviewer after 9 months of testing

Who They're For

The King Tide 6 is designed for anglers who spend serious time on the water—whether you're sight fishing the flats, running offshore, or working structure on your local lake. The medium wrap fits a wide range of face shapes (reviewers note it works particularly well for those who find full-wrap frames too aggressive or uncomfortable). Because these frames are prescription-ready, you don't have to choose between clear vision and performance optics. Available in eight lens and frame combinations including Blue Mirror, Green Mirror, Sunrise Silver Mirror, Copper Silver Mirror, Gray, and Rose options in the classic 580G glass.

These sunglasses ship with a rugged protective case, Costa C-Line Loop Retainer, microfiber cleaning cloth, and decals. The case features dedicated storage for the removable side shields and accessories, keeping everything organized between trips.

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Frequently Asked Questions

Are the Costa Del Mar King Tide 6 sunglasses available with prescription lenses?

Yes, the King Tide 6 9112 sunglasses are prescription-ready. You can order them with custom prescription lenses in either polycarbonate or glass materials. The frame's adjustable nose pads and medium wrap design accommodate prescription lenses while maintaining the same performance features, including the removable side shields and venting system.

What's the difference between the King Tide 6 and King Tide 8?

The primary difference is the frame curvature. The King Tide 6 features a 6-base (medium wrap) design with a more relaxed, squared-off look, while the King Tide 8 has an 8-base (full wrap) that curves more aggressively around the face. Both models share the same performance features—removable side shields, shark gill venting, 580G lenses, and sweat management—so your choice comes down to fit preference and how much wrap you want.

Do the removable side shields really prevent fogging?

Yes, the side shields incorporate vents inspired by shark gills that create airflow to prevent fogging. Multiple field testers report zero fogging even in hot, humid conditions while wearing neck gaiters—situations that typically cause fogging with standard fishing sunglasses. The vented nose pads and sweat channels in the temples further enhance moisture management.

What is Costa 580G lens technology and why is it better for fishing?

Costa 580G lenses use glass construction with technology that filters light at 580 nanometers, blocking harsh yellow light while enhancing reds, greens, and blues. This creates superior color contrast and definition, making it easier to spot fish, see structure, and read water depth changes. The glass is 20% thinner and 22% lighter than average polarized glass, offers better scratch resistance than polycarbonate, and provides 100% UV protection and polarization.

Which lens color is best for fishing in the King Tide 6?

Green Mirror 580G lenses are ideal for lake and inshore fishing, particularly sight fishing. Blue Mirror works well in bright offshore conditions. Copper Silver Mirror enhances contrast in variable light. Gray lenses are best for bright, sunny days with intense glare. The choice depends on your primary fishing environment—Costa's 580 technology ensures excellent performance across all color options.

Are the King Tide 6 sunglasses worth the price for serious anglers?

For anglers who spend significant time on the water, reviewers consistently say yes. The King Tide 6 won Best of Category for Eyewear at ICAST 2023 and represents Costa's most advanced frame engineering with features like removable side shields, zero-fog venting, and 580G glass lenses. Long-term testers report exceptional durability and performance that justifies the investment, with many calling them the best fishing sunglasses they've worn.

Compare With Similar Frames

How the Costa Del Mar King Tide 6 9112 Sunglasses stacks up against the closest alternatives we carry.

Read the full comparison

Costa Del Mar King Tide 6 vs Other Costa Fishing Sunglasses

Choosing between Costa's premium fishing sunglasses? The King Tide 6 sits at the top of Costa's lineup as their most advanced frame, but several PRO Series models offer compelling alternatives depending on your priorities and budget.

King Tide 6 vs Blackfin Pro

The Blackfin Pro ($272-$309) is a proven favorite among bass and shallow water anglers, known for its wide temples that block side light—critical for sight fishing. Like the King Tide 6, it features adjustable vented nose pads, Hydrolite grips, and Costa's 580G glass lenses. However, the Blackfin Pro lacks the King Tide's signature removable side shields, which means you're locked into a performance-fishing look. The King Tide 6's side shields snap off for a cleaner aesthetic around town, making it more versatile. The King Tide also incorporates shark gill-inspired venting throughout the frame and dedicated sweat management channels that the Blackfin Pro doesn't have. If you want the absolute latest technology and dual-purpose versatility, the King Tide 6 justifies its premium. If you prioritize value and don't need removable shields, the Blackfin Pro delivers excellent performance.

King Tide 6 vs Fantail Pro

The Fantail Pro ($196.87-$309) is Costa's largest PRO Series frame, designed specifically for anglers with bigger head sizes or those who want maximum coverage in hot, humid conditions. It offers extra sweat management and a full 8-base wrap. The King Tide 6, with its medium 6-base wrap, provides a more relaxed fit that works for a wider range of face shapes. The Fantail Pro's fixed design means it's purely a fishing frame, while the King Tide 6's removable side shields let you transition from boat to bar. The King Tide also represents four years of development—Costa's most advanced engineering to date—versus the Fantail Pro's earlier PRO Series technology. Choose the Fantail Pro if you need the largest possible frame and maximum coverage. Choose the King Tide 6 if you want the latest flagship features and lifestyle versatility.

King Tide 6 vs Reefton Pro

The Reefton Pro ($196.87-$309) is a solid all-around fishing frame with PRO Series features including adjustable vented nose pads and 580G lenses. It's available in 13 color combinations—more variety than the King Tide 6's eight options. However, like other PRO Series models, it lacks the King Tide's removable side shields and advanced shark gill venting system. The Reefton Pro is a great choice for anglers who want proven PRO Series performance at a lower price point and don't need the King Tide's specialized light management features. The King Tide 6 is the better choice if you're a serious angler who demands the absolute best technology and versatility, or if you fish in conditions where peripheral light intrusion and fogging are major concerns.

The Verdict

The King Tide 6 earned its Best of Category award at ICAST 2023 for good reason—it's Costa's most thoroughly engineered frame, combining removable side shields, zero-fog venting, and lifestyle versatility that no other Costa model offers. The PRO Series models (Blackfin, Fantail, Reefton) deliver excellent performance at lower price points but represent earlier technology without the King Tide's flagship innovations. For serious anglers who spend significant time on the water and want one pair that does it all, the King Tide 6 is worth the investment.

At a Glance

Costa Del Mar Blackfin Pro 9078 Sunglasses

Pros:

  • Wide temples provide excellent side light blocking for sight fishing
  • Part of the proven PRO Series with adjustable vented nose pads
  • Lower price point ($272-$309) compared to King Tide 6
  • Established favorite among bass and shallow water anglers

Cons:

  • No removable side shields—less versatile for off-water wear
  • Lacks the shark gill venting system of the King Tide 6
  • Fixed temple design without the King Tide's sweat management channels
  • Not the latest flagship technology (King Tide represents 4 years of development)

Costa Del Mar Fantail Pro 9079 Sunglasses

Pros:

  • Largest frame in the PRO Series—ideal for bigger head sizes
  • Extra coverage and increased sweat management
  • Lower price point ($196.87-$309) than King Tide 6
  • Proven PRO Series features including adjustable nose pads and Hydrolite grips

Cons:

  • No removable side shields for versatility
  • Larger, more aggressive look may not suit all face shapes
  • Lacks the King Tide's advanced shark gill venting system
  • Not the latest flagship engineering (King Tide is Costa's most advanced frame to date)

Costa Del Mar Reefton Pro 9080 Sunglasses

Pros:

  • Lower price point ($196.87-$309) compared to King Tide 6
  • PRO Series features including adjustable vented nose pads
  • Available in 13 color combinations for more variety
  • Proven performance for inshore and offshore fishing

Cons:

  • No removable side shields—less adaptable for lifestyle wear
  • Lacks the King Tide's shark gill-inspired venting system
  • Not the flagship model—King Tide represents Costa's most advanced engineering
  • Fewer specialized features for extreme light management

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