Costa Del Mar Slack Tide Sunglasses
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Costa Slack Tide Sunglasses
The Costa Del Mar Slack Tide is a classic rectangular frame built for anglers, boaters, and anyone who spends serious time on the water. Costa's signature 580 lens technology sits at the core of every pair, cutting the specific wavelengths of light that cause the most glare on open water and shallow flats while boosting contrast and color definition where it counts.
580 Lens Technology
Costa's 580 designation refers to the wavelength, in nanometers, that each lens is engineered to filter. Yellow light at 580nm is the primary driver of visual fatigue and glare on reflective surfaces. By blocking that band and transmitting the surrounding spectrum cleanly, 580 lenses sharpen the visual field and reduce eye strain during long days on the water. Every Slack Tide ships with a 580 lens. The style option determines the lens material.
580G vs 580P: Choosing Your Lens Material
The Slack Tide is offered in two lens material variants. Both deliver the full 580 light-blocking benefit and 100% UV protection. The difference is weight, scratch resistance, and optical purity.
| Feature | 580G (Glass) | 580P (Polycarbonate) |
|---|---|---|
| Lens material | Optical glass | Polycarbonate |
| Optical clarity | Reference-grade, highest resolution | Excellent, lighter weight |
| Weight | Heavier | Lighter |
| Impact resistance | Good | Higher impact resistance |
| Scratch resistance | Superior | Good with lens coating |
| UV protection | 100% | 100% |
| Polarization | Yes | Yes |
| Prescription ready | Yes | Yes |
Frame Construction and Fit
The Slack Tide frame uses a regular fit profile with a rectangular lens shape that provides broad coverage without extending into peripheral distortion. The frame is designed for comfort on extended wear. Nose pads on the Slack Tide are replaceable, which is a common reason shoppers search for Costa Slack Tide nose pad and nose piece replacement parts. Genuine Costa replacement nose pads and lenses are available through Island Water Sports.
Polarization and UV Protection
Every Slack Tide lens is polarized, eliminating horizontal glare reflected off water, roads, and other flat surfaces. Combined with 100% UV protection blocking UVA and UVB radiation, the Slack Tide is engineered for performance in bright coastal conditions where standard sunglasses fall short.
Who the Slack Tide Is Built For
The Slack Tide is categorized as a men's frame with a regular fit, making it the right choice for a wide range of face shapes. It is equally at home on a flats boat, on the beach, or driving in South Florida sun. The prescription-ready construction means opticians can fit prescription lenses into the frame, extending its value beyond over-the-counter use.
Why Buy at Island Water Sports
Island Water Sports is an authorized Costa Del Mar retailer. That means genuine product, full manufacturer warranty support, and staff who use the gear they sell. Shop in store in South Florida or online.
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Specifications
- Brand
- Costa Del Mar
- Model
- Slack Tide
- Lens Technology
- Costa 580 (blocks 580nm yellow light, enhances contrast)
- Polarization
- Yes, polarized
- UV Protection
- 100% UVA/UVB
- Lens Materials Available
- 580G (optical glass) and 580P (polycarbonate)
- Frame Fit
- Regular
- Prescription Ready
- Yes
- Gender
- Men's
- Product Type
- Sunglasses
Frequently Asked Questions
- Are the Costa Slack Tide sunglasses polarized?
- Yes. Every Costa Slack Tide lens is polarized, cutting reflected glare from water and other flat surfaces. The 580 lens technology also filters the 580nm yellow light band that causes the most visual fatigue in bright conditions.
- What is the difference between Costa Slack Tide 580G and 580P?
- 580G uses optical glass, which delivers the highest optical clarity and superior scratch resistance at a slightly heavier weight. 580P uses polycarbonate, which is lighter and more impact-resistant. Both provide 100% UV protection and full polarization.
- Can I get replacement lenses for the Costa Slack Tide?
- Yes. Costa Del Mar offers replacement lenses for the Slack Tide. Island Water Sports can assist with sourcing genuine Costa replacement lenses in store or online.
- How do I replace the nose pads on Costa Slack Tide sunglasses?
- The Slack Tide features replaceable nose pads. Genuine Costa Slack Tide nose pad and nose piece replacement kits are available through authorized retailers including Island Water Sports. Swap the worn pads out to restore a secure, comfortable fit.
- Are Costa Slack Tide sunglasses prescription ready?
- Yes. The Slack Tide frame accepts prescription lenses. An optician can fit your prescription into the frame, so you get the full benefit of Costa's 580 lens platform with corrective vision.
- What is Costa's 580 lens technology?
- Costa's 580 technology specifically filters light at the 580nm (yellow) wavelength, the primary driver of glare and eye fatigue on open water. By blocking that band while transmitting the rest of the visible spectrum cleanly, 580 lenses deliver sharper contrast and truer color in bright, reflective environments.
- Where can I buy Costa Del Mar Slack Tide sunglasses?
- Costa Del Mar Slack Tide sunglasses are available at Island Water Sports, an authorized Costa retailer. Shop in store in South Florida or order online at islandwatersports.com.