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Costa Slack Tide Replacement Lenses by Revant Optics

Costa Slack Tide Replacement Lenses by Revant Optics

$44.99 / pair
$44.99 / pair % Off
Sold out
  • Revant replacement lenses for Square Wayfarer Stealth Black
  • standard polarized stealth black replacement lenses detail
  • view looking through standard polarized stealth black replacement lenses
  • layers in standard polarized stealth black replacement lenses
  • a person wearing sunglasses with stealth black lenses
  • a person wearing sunglasses with stealth black lenses
  • Revant replacement lenses compatible with Costa Slack Tide

Costa Slack Tide Replacement Lenses by Revant Optics

Costa Slack Tide Replacement Lenses by Revant Optics

$44.99 / pair
$44.99 / pair % Off
Sold out
Step 2: Lens Color

Non-Mirrored Stealth Black

Mirrored

Most Popular / Gray Base Tint / VLT: 12%
Step 1: Lens Type
Standard Polarized / Stealth Black
$44.99 / pair
$44.99 / pair
Sold out

Free US Shipping on Orders $60+

Free standard shipping in the USA on all orders over $60.

Live outside of the USA? See our international shipping options

For EU and UK customers: please see our International Compliance page

1 Year Warranty

When you buy a Revant product, you're backed by a 60-day no questions asked return or exchange policy and a 1-year warranty.
Read our full warranty

How to Install

Custom cut replacement lenses for any brand and frame of sunglasses

Don't want to install lenses yourself? Use our custom lens service.

Get Custom Lenses

View full details

View Through Lens

1
Standard / Stealth Black
Standard / Stealth Black
Lens Color: Standard Polarized / Stealth Black

Non-Mirrored Stealth Black

Mirrored

VLT Spectrum Visualization: 12%

Stealth Black features a neutral gray view-through that preserves natural color while cutting reflected glare from pavement, water, and snow. It delivers sharper clarity and reduced eye strain for driving, beach days, stadium events, and extended time in bright sun.

Perfect For:

Driving Everyday Water

Different Lens Types Explained

Revant Replacement Lenses for Stealth Black

Make your old Costa Slack Tide lenses like new with our replacement lenses for Costa sunglasses. These lenses perfectly fit Costa Slack Tide with the model number SLT. And because our lenses meet or exceed the quality of your original Costa Slack Tide lenses, you'll get the same performance you've come to expect.

Stealth Black features a neutral gray view-through that preserves natural color while cutting reflected glare from pavement, water, and snow. It delivers sharper clarity and reduced eye strain for driving, beach days, stadium events, and extended time in bright sun.

Other Features We Like to Nerd-Out About

  • Best for bright light (12% light transmission)
  • Neutral tint looking through the lens
  • Anti-scratch protective coating
  • Lens material: optical polycarbonate

Comes With

  • 1 pair of replacement lenses (left & right) for your Costa Slack Tide sunglasses
  • Protective microfiber bag for storage and cleaning
  • Costa Slack Tide lens care instructions
  • Note: sunglass frame not included

Better Performance.
Half the Price.

Revant logo
Revant
Lenses
Starting at
$24.99
Polarized Available
UV Protection
Impact Resistant
Optically Corrected
Anti-Reflective Available
60-Day Trial
Costa
Lenses
Starting at
$44.00
Polarized Available
UV Protection
Impact Resistant
Optically Corrected
New Costa
Sunglasses
Starting at
$160.00
Polarized Available
UV Protection
Impact Resistant
Optically Corrected

Do I Really Need Polarized Sunglasses?

Polarization cuts glare, increases visibility, and lets you see underwater. In short, it helps you do the things you love better. And once you’ve taken that hairpin without getting blinded or looked a fish straight in the eye, you’ll never go back.

Unmatched Quality

We don’t know everything, but we know lenses. The last ten years have been all about testing, testing, testing. Every single material, coating, and manufacturing method has been evaluated. Only the best are used for our lenses.

  • High Impact Resistance
  • Polarized to Block Glare
  • 100% UV Protection
About Our Testing
Find replacement lenses for any activity

A Color for Every Activity

It makes a difference and there are a lot of them. So we put together a short quiz to help you decide.

Questions About Replacing Your Costa Slack Tide Lenses?

Can I replace the lenses in my sunglasses?

Yes, most name-brand sunglasses have lenses that can be replaced. Revant lenses are custom-cut for specific frame models and include installation instructions. In most cases, you can replace the lenses at home in under two minutes.

How do I know if Revant lenses will fit my frame?

Check the model name or number printed on the inside temple of your sunglasses. Revant lenses are made for exact frame models, not just similar styles. If the model on your frame matches the one listed on our product page, you’ll get a perfect fit.

If you're unsure or don't see a model name or number, contact us and we can help make sure you get the right lenses for your sunglasses.

What’s the difference between Revant lenses and my original lenses?

Revant lenses are aftermarket, not OEM, but they’re engineered to meet or exceed the performance of original lenses. Each lens is traced from the original frame model using high-precision digital scanners that capture its unique curvature and edge geometry down to fractions of a millimeter. That means you get a lens cut to fit your frame exactly. No guesswork, no gaps, and no rattle.

Beyond fit, Revant lenses are tested for optical clarity, impact resistance, and durability. We also offer upgrades like polarization, MirrorShield® tints, anti-reflective coatings, and hydrophobic layers that go beyond what many stock lenses provide.

Overall rating: 4.0 / 5 from 14 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["fit","quality","look","lenses","cloth","visibility","clarity","feature","buy"].

Review highlights

Reviews

Better than the original!

"I'm amazed how good those lenses are, they give excellent contrast, also one thing that really made me happy about ordering my lenses through Revant was the customer service they are a 100% hassle free company, thanks guys!"

— Ilan O. (5/5)

BETTER THAN NEW

"Lenses were easy to install, fit perfectly, and look great! Perform perfectly as well! Will buy again!"

— Jason W. (5/5)

"Muy buena calidad"

— Maykol (5/5)

New Slack Tide lenses

"Awesome fit in frame, like brand new !!!! 4 th set of lenses I’ve gotten for our family . Quick and easy order and delivery."

— brian k. (5/5)

Great product can’t even tell

"Great product can’t even tell the difference in the lens"

— Noah H. (5/5)

Scratch to easy

"Scratch to easy"

— Branton (3/5)

Pleasantly surprised

"Wasn’t sure what to expect. Bought two polarized sets for my Costa Slack Tides. Lenses look great, packaging was top quality, everything is above expectation."

— Joseph L. (5/5)

Lenses do not fit

"The lenses look great and the clarity is there but they do not stay in the frame whatsoever, they will fall out being sat down on a table. I’m returning them as soon as possible."

— Rhett C. (1/5)

Great quality great customer service

"Great quality great customer service"

— Clay M. (5/5)

Lenses pop out

"The lenses do not fit and pop out constantly"

— Kyle B. (1/5)

Q&A

Are these lenses the same thickness as the original Costa lenses? I've purchased other lenses that weren't as thick and they move in the frames.
Hi there! We use many of the same advanced optical techniques you'll find in lenses from these high-end manufacturers. Our lenses are designed and manufactured by Revant Optics to fit into the frames they were meant to replace but keep in mind that none of the original logos or branding will be present on the lenses. Additionally, different companies all have their own proprietary techniques for developing lenses (e.g. Prizm, Chromance, Spy Optics’ Happy lenses). Our lenses are not exactly the same as the originals, but we use similar techniques that are our own. For a bit more detailed information of a full comparison, I've added a few blog posts that might be helpful: Revant vs. Oakley Lenses: An Honest Side-by-Side ComparisonPolycarbonate vs. Glass Lenses We offer lenses that are optically crisp and durable. Not to mention, we've got you covered with our 1-year manufacturer's warranty and 60-day no-hassle return policy.