Availability: 5 in stock
The Maui Jim KAHANA MJ640 Sunglasses bring modern refinement to the aviator silhouette with a square-shaped lens and double-bridge titanium frame that’s built for all-day wear. Named after a Hawaiian locale, these unisex sunglasses balance classic styling with performance-driven lens technology that serious outdoor enthusiasts depend on.
The KAHANA features MauiBrilliant lenses—Maui Jim’s most advanced lens material that delivers optics nearly as clear as glass with just one-third of the weight. This proprietary material combines exceptional clarity with impact resistance and scratch protection, making it the top choice for prescription wearers who refuse to compromise on optical performance. Every lens is infused with PolarizedPlus2 technology, which eliminates 99.9% of glare, blocks 100% of harmful UV rays, and enhances color through a patented blend of rare earth elements that boost reds, greens, and blues.
Available in three lens options tailored to different light conditions: Maui HT (High Transmission) for variable light and overcast days, Neutral Grey for bright direct sunlight with the richest color and sharpest contrast, and Maui Rose for fast-action activities requiring maximum contrast. Each lens includes anti-reflective coatings on both surfaces, plus oleophobic and hydrophobic treatments that repel water, oil, and smudges.
“These things are super duper light with still having excellent lenses.” — Tommy Bahama customer review
The full-rim titanium frame is corrosion-resistant, incredibly lightweight, and retains its shape over years of use. Maui Jim engraved their signature native pattern on the titanium front rim and rubber temple tips—a subtle nod to the brand’s Hawaiian roots. The double-bridge design adds structural integrity while creating a distinctive look that suits a range of face shapes, particularly those with narrow to medium features. Dual-finish titanium nose pads are adjustable for a customized fit, and the 53mm lens width with 19mm bridge and 145mm temples provides medium coverage without feeling oversized.
The KAHANA is available with prescription lenses through authorized Maui Jim retailers. The MauiBrilliant material is specifically engineered for prescription compatibility, maintaining optical clarity across the entire lens surface even with stronger prescriptions. This makes the KAHANA an excellent choice for anyone who needs corrective lenses but wants the full benefits of Maui Jim’s color-enhancing, glare-eliminating technology.
Whether you’re driving long distances, spending time on the water, or simply want sunglasses that make the world look better, the KAHANA MJ640 delivers the optical performance and lightweight comfort that Maui Jim is known for. The combination of titanium durability, MauiBrilliant clarity, and thoughtful design details makes these sunglasses a reliable companion for years of outdoor adventures.
