Product Details
Color Details
Size DetailsFrequently Asked Questions
Are the Maui Jim KAPI'I MJ617 sunglasses prescription-ready?
What is SuperThin Glass and how does it compare to other Maui Jim lens materials?
What does PolarizedPlus2 technology do?
What lens color should I choose for the KAPI'I MJ617?
What size are the Maui Jim KAPI'I MJ617 sunglasses?
Do the KAPI'I sunglasses have spring hinges?
Compare With Similar Frames
How the Maui Jim KAPI'I MJ617 Sunglasses stacks up against the closest alternatives we carry.
- Similar square shape and medium fit with comparable dimensions
- Same SuperThin Glass lens material for crisp optics and scratch resistance
- Slightly lower starting price point ($199 vs $237)
- Similar square frame shape and aesthetic appeal
- Comparable price range and premium positioning
- PolarizedPlus2 lens technology with multiple lens color options
- More affordable entry point to Maui Jim quality ($191 vs $237)
- Still features PolarizedPlus2 lens technology for superior optics
- Maui Jim's signature comfort features and build quality
Read the full comparison
Maui Jim KAPI'I MJ617 vs Similar Square Frames
If you're considering the KAPI'I MJ617, you might also be weighing other classic square frames from Maui Jim. Here's how the KAPI'I stacks up against comparable models in our collection.
KAPI'I MJ617 vs Red Sands MJ432
The Red Sands MJ432 ($199-$239) is the closest competitor to the KAPI'I. Both feature square lenses, SuperThin Glass optics, and PolarizedPlus2 technology. The Red Sands starts at a slightly lower price point and offers a similar medium fit with matte and gloss finish options. The main differences come down to subtle design details—the KAPI'I features Maui Jim's signature wavy temple pattern and script logo placement, while the Red Sands has its own distinctive temple styling. If you're deciding between these two, try both on if possible; the fit and feel are comparable, so it often comes down to which aesthetic you prefer.
KAPI'I MJ617 vs Castles MJ728
The Castles MJ728 ($235-$261) sits in the same price range as the KAPI'I and offers a similar square silhouette. The key difference may be in lens material—some Castles variants use MauiPure polycarbonate instead of SuperThin Glass, which makes them lighter and more impact-resistant but with slightly less optical crispness. If you prioritize the absolute sharpest optics and don't mind a bit more weight, the KAPI'I's SuperThin Glass is the better choice. If you want maximum lightness for active sports, check whether the Castles variant you're considering uses MauiPure.
KAPI'I MJ617 vs Kaupo Gap MJ437
The Kaupo Gap MJ437 ($191-$199) is a more affordable entry into Maui Jim's square frame lineup. You'll still get PolarizedPlus2 technology and excellent UV protection, but the lower price typically reflects different materials or a simpler construction. The KAPI'I's SuperThin Glass lenses deliver noticeably crisper optics than polycarbonate alternatives, and the premium details like the signature wavy temple tips add to the overall experience. If this is your first pair of Maui Jims and you want to test the brand, the Kaupo Gap is a smart choice. If you're already sold on Maui Jim and want their best optical performance, the KAPI'I is worth the investment.
Our take: The KAPI'I MJ617 hits the sweet spot for customers who want premium SuperThin Glass optics in a classic, versatile square frame. The spring hinges and saddle-style bridge make it comfortable for all-day wear, and the medium fit works for most face shapes. If you're choosing between similar Maui Jim squares, the KAPI'I stands out for its combination of optical clarity, thoughtful comfort features, and that signature Maui Jim color enhancement that makes everything look better.
At a Glance
Maui Jim RED SANDS MJ432 Sunglasses
Pros:
- Similar square shape and medium fit with comparable dimensions
- Same SuperThin Glass lens material for crisp optics and scratch resistance
- Slightly lower starting price point ($199 vs $237)
- Available in multiple frame colors including matte black
Cons:
- May have slightly different bridge style and nose pad configuration
- Different model aesthetic and temple design details
- Fewer customer reviews available compared to KAPI'I
Maui Jim CASTLES MJ728 Sunglasses
Pros:
- Similar square frame shape and aesthetic appeal
- Comparable price range and premium positioning
- PolarizedPlus2 lens technology with multiple lens color options
- Likely features similar comfort elements like spring hinges
Cons:
- May use different lens material (MauiPure vs SuperThin Glass)
- Different frame dimensions may affect fit
- Model-specific design details and temple styling differ from KAPI'I
Maui Jim KAUPO GAP MJ437 Sunglasses
Pros:
- More affordable entry point to Maui Jim quality ($191 vs $237)
- Still features PolarizedPlus2 lens technology for superior optics
- Maui Jim's signature comfort features and build quality
- Good option for first-time Maui Jim buyers
Cons:
- May use lighter lens material instead of premium SuperThin Glass
- Different frame shape and styling may not suit all preferences
- Lower price may reflect different materials or construction details