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02 - Black Gloss - Neutral Grey
Maui Jim KAUPO GAP MJ437 Sunglasses
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$199.23

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Maui Jim KAUPO GAP MJ437 Sunglasses

02 - Black Gloss - Neutral Grey

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MJ_437_02
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02 - Black Gloss - Neutral Grey 02 - Black Gloss - Neutral Grey 02 - Black Gloss - Neutral Grey 04T - Red And Black Tortoise - Hawaii Lava 04T - Red And Black Tortoise - Hawaii Lava 04T - Red And Black Tortoise - Hawaii Lava 03M - Matte Blue - Blue Hawaii 03M - Matte Blue - Blue Hawaii 03M - Matte Blue - Blue Hawaii 10 - Tortoise - Hcl Bronze 10 - Tortoise - Hcl Bronze 10 - Tortoise - Hcl Bronze
02 - Black Gloss - Neutral Grey
02 - Black Gloss - Neutral Grey
02 - Black Gloss - Neutral Grey
04T - Red And Black Tortoise - Hawaii Lava
04T - Red And Black Tortoise - Hawaii Lava
04T - Red And Black Tortoise - Hawaii Lava
03M - Matte Blue - Blue Hawaii
03M - Matte Blue - Blue Hawaii
03M - Matte Blue - Blue Hawaii
10 - Tortoise - Hcl Bronze
10 - Tortoise - Hcl Bronze
10 - Tortoise - Hcl Bronze
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    Free Shipping
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    Price Match
  • Easy Returns
    Easy Returns
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ADD PRESCRIPTION
Add To Cart For Lowest Price
$199.23

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Color

02 - Black Gloss - Neutral Grey
03M - Matte Blue - Blue Hawaii
10 - Tortoise - Hcl Bronze

*Swipe to view more color variants

  • Free Shipping
    Free Shipping
  • Price Match
    Price Match
  • Easy Returns
    Easy Returns
  • Licensed Opticians
    Licensed Opticians
DESCRIPTION RATINGS & REVIEWS PRESCRIPTION GUIDE

The Maui Jim KAUPO GAP MJ437 sunglasses bring together a refined aviator silhouette and cutting-edge lens technology in a frame so light you'll barely feel it. Built with a thin injected nylon frame and paired with MauiBrilliant lenses, these sunglasses deliver exceptional optical clarity without the weight penalty of traditional glass.

MauiBrilliant Lens Technology

The KAUPO GAP features MauiBrilliant—Maui Jim's most advanced lens material. These lenses offer optics nearly as clear as glass while weighing just one-third as much, making them ideal for all-day wear and active use. Every pair includes Maui Jim's patented PolarizedPlus2 technology, which eliminates 99.9% of glare, blocks 100% of harmful UV rays, and enhances color through a proprietary blend of three rare earth elements that boost reds, greens, and blues. The result is superior visual acuity and contrast that reveals details other sunglasses miss.

MauiBrilliant lenses also feature anti-reflective treatment on the back surface to eliminate bounce-back glare, plus oleophobic and hydrophobic coatings that repel water, oil, and smudges. Whether you're driving in bright sunlight, spending time on the water, or navigating everyday glare, these lenses adapt to varied conditions with remarkable clarity.

Lightweight Comfort & Fit

Comfort is where the KAUPO GAP truly shines. The thin nylon frame construction keeps weight to an absolute minimum—reviewers frequently describe the fit as so light "you forget they're there." Adjustable nose pads ensure a customized fit across different face shapes, while rubber inserts on the inner temples provide secure, slip-free wear during movement. The 61mm lens width, 15mm bridge, and 140mm temples deliver a medium to large fit that works well for most face sizes.

"These Kaupo Gaps are so comfortable can't even tell you're wearing them." — FramesDirect customer review

Prescription-Ready & Versatile

The KAUPO GAP is fully prescription-ready, accommodating single vision and progressive lenses through Maui Jim's MauiPassport program. This makes it an excellent choice if you need vision correction but refuse to compromise on lens quality or UV protection. Available in four lens colors—Neutral Grey for bright conditions, HCL Bronze for everyday versatility, Blue Hawaii for enhanced contrast, and Hawaii Lava for vibrant color pop—you can choose the tint that matches your activities and light conditions.

The double-bridge aviator design offers a modern take on a classic shape, working equally well for men and women. From beach days to road trips to casual wear, the KAUPO GAP handles it all with style and performance that justify the Maui Jim reputation.

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Frequently Asked Questions

Are the Maui Jim KAUPO GAP sunglasses prescription-ready?

Yes, the KAUPO GAP MJ437 is prescription-ready. Maui Jim offers 96% of their sunglasses in prescription through their MauiPassport program, which uses custom digital lens design and direct surfacing technology. You can get these frames fitted with single vision or progressive prescription lenses while maintaining the PolarizedPlus2 technology and UV protection.

What is MauiBrilliant lens material and how does it compare to glass?

MauiBrilliant is Maui Jim's most advanced lens material, offering optics nearly as clear as glass while weighing just one-third as much. It provides almost double the clarity of traditional polycarbonate lenses and offers superior impact resistance compared to glass. While glass lenses have slightly better scratch resistance, MauiBrilliant balances clarity, weight, durability, and impact resistance better than any other lens material.

What size are the Maui Jim KAUPO GAP sunglasses?

The KAUPO GAP MJ437 has a 61mm lens width, 15mm bridge, and 140mm temple length, making it a medium to large fit. This size works well for most face shapes and is considered an extra-large fit by some retailers. The adjustable nose pads allow you to customize the fit for your facial contours.

How does PolarizedPlus2 technology work?

PolarizedPlus2 technology eliminates 99.9% of glare through a high-efficiency polarized film, blocks 100% of harmful UV rays, and enhances color using a patented blend of three rare earth elements that boost red, green, and blue light waves. The lenses also feature anti-reflective treatment on the back surface to eliminate bounce-back glare, plus oleophobic and hydrophobic coatings for easy cleaning.

Which lens color is best for the KAUPO GAP?

The best lens color depends on your use. Neutral Grey offers the highest light reduction for bright, direct sunlight. HCL Bronze provides a warm tint excellent for everyday, varied conditions. Blue Hawaii delivers crisp, pure color with enhanced contrast. Hawaii Lava offers vibrant color enhancement. Many owners recommend HCL Bronze or Hawaii Lava for versatility across different lighting conditions.

Are the KAUPO GAP sunglasses comfortable for all-day wear?

Yes, the KAUPO GAP is exceptionally comfortable for extended wear. The thin injected nylon frame is extremely lightweight, and reviewers consistently mention you barely feel them on your face. The adjustable nose pads and rubber temple inserts provide a secure, customized fit without pressure points. The lightweight MauiBrilliant lenses further reduce overall weight compared to glass alternatives.

Compare With Similar Frames

How the Maui Jim KAUPO GAP MJ437 Sunglasses stacks up against the closest alternatives we carry.

This product
Maui Jim KAUPO GAP MJ437 Sunglasses
Maui Jim Maui Jim KAUPO GAP MJ437 Sunglasses $191.60
2M20 - Matte Black - Blue Hawaii
Maui Jim Maui Jim RED SANDS MJ432 Sunglasses $199.23
  • Extremely lightweight design
  • Similar price point ($199–$239)
  • Proven track record with long-term owners
View frame →
17 - Silver - Neutral Grey
Maui Jim Maui Jim MAVERICKS MJ264 Sunglasses $235.60
  • Titanium frame construction for durability
  • Classic aviator styling
  • Proven Maui Jim quality
View frame →
17 - Silver - Blue Hawaii
Maui Jim Maui Jim BABY BEACH MJ245 Sunglasses $261.05
  • Classic metal aviator construction
  • Proven design with strong customer base
  • PolarizedPlus2 technology
View frame →
Read the full comparison

Maui Jim KAUPO GAP vs. RED SANDS vs. MAVERICKS

Choosing between Maui Jim's lightweight frames comes down to style preference and frame material. The KAUPO GAP MJ437 offers a modern double-bridge aviator design in ultra-light injected nylon, making it one of the lightest options in the Maui Jim lineup. If you want an aviator silhouette without the weight of traditional metal frames, this is your best choice.

The RED SANDS MJ432 ($199–$239) is frequently mentioned alongside the KAUPO GAP in reviews as one of Maui Jim's most comfortable frames. While it has a different shape than the aviator style, it shares the same feather-light construction and all-day wearability. One reviewer noted the RED SANDS "held this title for a long time" as the most comfortable Maui Jim, but the KAUPO GAP has "usurped their title." If frame shape isn't critical and you prioritize pure comfort, either will serve you well.

The MAVERICKS MJ264 ($236–$292) offers a more traditional aviator experience with titanium frame construction. It's durable and classic, but the metal frame adds weight compared to the KAUPO GAP's nylon. Choose the MAVERICKS if you prefer the look and feel of metal aviators and don't mind the slightly higher price and weight.

Our recommendation: The KAUPO GAP delivers the best balance of modern aviator style, minimal weight, and value. The injected nylon frame with adjustable nose pads and rubber temple inserts provides exceptional comfort that's hard to beat, especially at the $192–$199 price point. If you want the lightest aviator-style frame Maui Jim offers with their advanced MauiBrilliant lenses, the KAUPO GAP is the clear winner.

At a Glance

Maui Jim RED SANDS MJ432 Sunglasses

Pros:

  • Extremely lightweight design
  • Similar price point ($199–$239)
  • Proven track record with long-term owners
  • Available in multiple lens colors

Cons:

  • Different frame shape may not suit aviator preference
  • Slightly different fit profile
  • May be too dark in cloudy conditions according to some reviews

Maui Jim MAVERICKS MJ264 Sunglasses

Pros:

  • Titanium frame construction for durability
  • Classic aviator styling
  • Proven Maui Jim quality
  • Similar size range

Cons:

  • Higher price point ($236–$292)
  • Titanium may be slightly heavier than KAUPO GAP's nylon
  • Different aesthetic with metal frame

Maui Jim BABY BEACH MJ245 Sunglasses

Pros:

  • Classic metal aviator construction
  • Proven design with strong customer base
  • PolarizedPlus2 technology
  • Prescription-ready

Cons:

  • Higher price range ($261–$293)
  • Metal frame likely heavier than KAUPO GAP
  • Different aesthetic than modern double-bridge design

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