14 - Shiny Black W In Trans Light Grey - Neutral Grey
Maui Jim KENUI MJ642 Sunglasses
$283.85

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Maui Jim KENUI MJ642 Sunglasses

14 - Shiny Black W In Trans Light Grey - Neutral Grey

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MJ_GS642_14
$283.85

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DESCRIPTION RATINGS & REVIEWS PRESCRIPTION GUIDE

The Maui Jim KENUI MJ642 sunglasses deliver the classic rectangular silhouette you can wear from the office to the outdoors, built around the brand's renowned SuperThin Glass lenses and PolarizedPlus2 technology. Born on the beaches of Maui in 1987, Maui Jim engineered their patented lens system to combat intense Hawaiian glare while revealing the islands' vivid colors—and that same technology powers the KENUI's exceptional optical performance.

SuperThin Glass Lenses: Optical Clarity Without Compromise

The KENUI features SuperThin Glass lenses—32% thinner and lighter than standard glass—offering the absolute crispest optics in Maui Jim's lineup. Glass delivers superior scratch resistance and the highest optical clarity of any lens material, making it the choice for those who prioritize visual precision. The lenses incorporate PolarizedPlus2 technology, which eliminates 99.9% of glare, blocks 100% of harmful UVA and UVB rays, and filters high-energy visible (HEV) blue light. A patented blend of three rare earth elements enhances reds, greens, and blues, so colors appear richer and more saturated than through ordinary polarized lenses.

Every lens includes anti-reflective coating on the backside to eliminate bounce-back glare, plus an oleophobic treatment that repels water, fingerprints, and oils for easier cleaning. Available in four lens colors—Neutral Grey for bright sunlight, HCL Bronze for everyday versatility, Maui HT for low-light contrast, and Maui Rose for fast-action sports—the KENUI adapts to your conditions.

Design Details & Fit

The frames are constructed from durable nylon with a saddle-style bridge (18mm) that distributes weight comfortably across the nose. At 53mm lens width and 145mm temples, the KENUI offers a medium fit suited to a wide range of face shapes, particularly round and oval faces. The temples feature Maui Jim's signature native pattern embedded into the core exterior—a geometric chevron design inspired by Hawaiian culture—plus matching pattern details on the rubber temple tips for secure, no-slip grip.

Reviewers consistently highlight the frame's solid construction and quality feel, though the SuperThin Glass lenses do add weight compared to polymer alternatives. One Tommy Bahama customer noted the frames are "slightly too heavy" after extended wear but emphasized they're "super comfortable" compared to other brands. The trade-off is intentional: glass delivers unmatched clarity and scratch resistance for those who value optical performance over featherweight feel.

Prescription-Ready & Versatile

The KENUI is prescription-ready through authorized Maui Jim retailers, available in single-vision and progressive lens options using MauiBrilliant or MauiPure lens materials (note: SuperThin Glass is not available in prescription). The rectangular shape and full-rim construction make it a versatile choice for both men and women, equally at home on a fishing boat, behind the wheel, or paired with business casual attire.

Each pair ships with a Maui Jim case, lens cloth, and two-year manufacturer warranty against defects in materials and workmanship.

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Customer Reviews

Based on 3 reviews
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K
Kristi Robinson
Perfect match

I purchased bc my original pair was run over by a car. The expensive prescription lenses were intact, so I ordered these to use frames as replacement. They were exactly as described and my lenses were able to be placed in the frames with no damage!

K
Karen Godino
Authentic Maui Jim's

We had tried on these glasses while in a vacation cruise but they were too $$$. Loved these and had to have. We came across designer optics and researched the authenticity of the store and their online store. The price was quite competitive even before using a discount code. We took a chance and ordered after speaking with a live rep. Yup! Live person. The communication and shipping were great and
they arrived with an authentic maui case and bag and the model numbers match. We are very pleased and I love my 👓 🕶 😎. We will definitely use them for future ordering. KK

R
Rogér J Jehan
Smooth, fast & easy

Despite some of the less than flattering reviews I’ve seen, my experience was quite the opposite. Pretty simple… Ordered what I wanted, got a great price, shipped timely and arrived unscathed—-what more could you ask for? Definitely going to buy another pair from these guys!!

Frequently Asked Questions

Are Maui Jim KENUI sunglasses available with prescription lenses?

Yes, the KENUI MJ642 can be fitted with prescription lenses through authorized Maui Jim retailers. Prescription options are available in single-vision, bifocal, and progressive formats using MauiBrilliant or MauiPure lens materials. However, the SuperThin Glass material that comes standard on non-prescription KENUI frames is not available for prescription lenses. Most Maui Jim frames (96% of their collection) support prescription lenses.

What is PolarizedPlus2 technology and how does it work?

PolarizedPlus2 is Maui Jim's patented lens technology that goes beyond standard polarization. It eliminates 99.9% of glare, blocks 100% of UVA and UVB rays, and filters harmful high-energy visible (HEV) blue light. The lenses incorporate a blend of three rare earth elements that enhance red, green, and blue wavelengths, resulting in richer color saturation and improved contrast compared to ordinary polarized sunglasses.

How do SuperThin Glass lenses compare to plastic lens materials?

SuperThin Glass lenses provide the absolute crispest optics available and the best scratch resistance of any Maui Jim lens material—they're 32% thinner and lighter than standard glass. However, they are heavier than polymer alternatives like MauiBrilliant or MauiPure, and less impact-resistant. Glass is ideal for activities like fishing or driving where optical clarity is paramount, while polymer materials are better for high-impact sports.

What face shapes work best with the KENUI rectangular frame?

The KENUI's rectangular shape with 53mm lens width and medium fit is particularly well-suited to round and oval face shapes, as the angular lines provide flattering contrast to softer facial contours. The saddle-style bridge and full-rim design offer a classic, versatile look that works for both men and women across a variety of face shapes.

Are the KENUI sunglasses heavy to wear?

The KENUI features SuperThin Glass lenses, which are Maui Jim's heaviest lens option despite being 32% lighter than standard glass. Some reviewers note they feel slightly heavier than polymer-lens sunglasses, particularly during extended wear. However, most customers report the weight is manageable and the trade-off is worth it for the superior optical clarity and scratch resistance that glass provides.

What lens colors are available for the KENUI and which should I choose?

The KENUI is available in four lens colors: Neutral Grey (best for bright, direct sunlight with richest colors and sharpest contrast), HCL Bronze (a warm "High Contrast Lens" excellent for everyday varied conditions), Maui Rose (subtle rose tint with highest contrast for fast-action sports), and Maui HT ("High Transmission" lens offering extra contrast and color in low-light conditions and golf). Your choice depends on your primary activities and lighting conditions.

Compare With Similar Frames

How the Maui Jim KENUI MJ642 Sunglasses stacks up against the closest alternatives we carry.

Read the full comparison

Maui Jim KENUI MJ642 vs. Similar Rectangular Frames

If you're drawn to the KENUI's classic rectangular shape and Maui Jim's legendary lens technology, you might also consider these alternatives from our Maui Jim collection:

KENUI MJ642 vs. PUNCHBOWL MJ219

Both the KENUI and Punchbowl offer rectangular frames with medium fit and PolarizedPlus2 lenses in a similar $200-$230 price range. The key difference is in the details: the KENUI features distinctive signature native pattern temple detailing—geometric chevron designs inspired by Hawaiian culture—that give it a more distinctive look. The Punchbowl opts for cleaner, more understated temple styling. If you appreciate cultural design elements and want a frame that stands out subtly, the KENUI is the choice. If you prefer minimalist styling, consider the Punchbowl.

KENUI MJ642 vs. HEMA MJ443

The Hema represents a more affordable entry point at $160.77—about $95-$135 less than the KENUI. Both offer rectangular shapes with PolarizedPlus2 technology, but the Hema typically features MauiPure lens material rather than SuperThin Glass, making it lighter but with slightly less optical clarity and scratch resistance. The Hema also has a larger 62mm lens width versus the KENUI's 53mm, which may overwhelm smaller faces. Choose the KENUI if you want the absolute best optical performance with SuperThin Glass and prefer a medium fit; opt for the Hema if budget is a priority and you prefer a larger, lighter frame.

KENUI MJ642 vs. LOCAL KINE MJ810

The Local Kine offers a more contemporary take on the rectangular frame at a comparable $200-$222 price point. While both share PolarizedPlus2 technology and medium fit, the Local Kine features modern styling without the KENUI's traditional native pattern detailing. The choice comes down to aesthetic preference: the KENUI's classic design with cultural heritage elements versus the Local Kine's cleaner, more modern lines.

Why Choose the KENUI?

The KENUI stands out for its SuperThin Glass lenses (the crispest optics Maui Jim offers), distinctive native pattern temple design, and versatile rectangular shape that transitions seamlessly from professional to recreational settings. It's the ideal choice for those who prioritize optical clarity and scratch resistance, appreciate design details rooted in Hawaiian culture, and want a frame that works equally well for driving, fishing, or everyday wear.

At a Glance

Maui Jim PUNCHBOWL MJ219 Sunglasses

Pros:

  • Similar rectangular shape and medium fit
  • Available with PolarizedPlus2 technology
  • Comparable price point ($200-$228)
  • Prescription-ready like the KENUI

Cons:

  • May use different lens material depending on variant
  • Different temple design without the KENUI's signature native pattern detailing
  • Slightly different dimensions may affect fit preference

Maui Jim HEMA MJ443 Sunglasses

Pros:

  • Significantly lower price point at $160.77
  • Rectangular unisex design similar to KENUI
  • PolarizedPlus2 lens technology included
  • Lighter weight with MauiPure lens material

Cons:

  • Lacks the KENUI's distinctive native pattern temple detailing
  • May not feature SuperThin Glass lenses (typically MauiPure)
  • Different frame construction and styling details
  • Larger 62mm lens width may not suit all face sizes

Maui Jim LOCAL KINE MJ810 Sunglasses

Pros:

  • Similar price range ($200-$222)
  • Rectangular frame shape with modern styling
  • PolarizedPlus2 technology standard
  • Medium fit comparable to KENUI

Cons:

  • Different aesthetic without the classic native pattern detailing
  • May feature different lens material options
  • Newer model with less established customer feedback
  • Different temple design and frame details

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