Costa Del Mar Nusa Polarized Sunglasses
Built for the Coast, Made to Last
The Costa Del Mar Nusa is a bold, expressive frame inspired by the legendary waters surrounding the Nusa islands of Indonesia, one of the world's most celebrated surf and dive destinations. Wide-fit, slightly oversized, and handcrafted from Bio-acetate, the Nusa is the kind of frame that holds its own on the water and off it.
Every detail points to quality: inset polarized glass lenses seated flush in the frame, premium hardware throughout, and the kind of finishing that only comes from handmade construction. These are not sport-wrap frames. The Nusa is a lifestyle silhouette with the optical performance Costa is known for.
Costa 580G Glass Lens Technology
The 580G designation means two things: the lens filters light at 580 nanometers (the wavelength that causes the most visual fatigue on the water, by blocking yellow light and enhancing reds, greens, and blues), and the lens material is Costa's premium polarized glass. Glass lenses offer inherently higher optical clarity than polycarbonate, are more scratch-resistant, and maintain their optical properties over years of hard use. The Base 6 lens curve wraps the field of view naturally without introducing edge distortion, giving you a wide, undistorted sight picture in bright coastal conditions.
Polarization eliminates horizontal glare reflected off water, sand, and wet surfaces, so you see more clearly in the conditions where it matters most.
Bio-Acetate Frame Construction
The Nusa frame is made from Bio-acetate, a plant-derived cellulose acetate that delivers the same rich depth of color and smooth finish as conventional acetate while being produced with a significantly lower environmental footprint. Handmade construction means each frame is shaped, polished, and fitted by hand rather than stamped from a mold, resulting in tighter tolerances and more consistent fit over the life of the frame.
The wide frame fit and XL sizing give the Nusa a confident, fashion-forward silhouette that sits comfortably on broader face shapes without feeling heavy. The slightly oversized look is intentional: maximum coverage, maximum style.
Premium Craftsmanship Details
The Nusa carries the premium hardware details that distinguish Costa's top-tier frames: clean hinge construction, quality temple tips, and the iconic Costa wave logo at the temple. The inset glass lenses are a signature feature, seated inside the frame face rather than flush with the front surface, creating depth in the profile and protecting the lens edges.
These frames are handmade. That distinction matters when you are spending money on something you will wear every day on the water or on the road.
Shop Costa Nusa at Island Water Sports
Island Water Sports carries the Costa Del Mar Nusa in store and online. Costa is one of the most trusted names in performance polarized eyewear, and the Nusa is one of their most expressive frames. Pick your combination from the variant selector above and get it delivered or pick it up in South Florida.
Free Shipping, No Minimum for IWS Beach Club Members.
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Specifications
- Brand
- Costa Del Mar
- Model
- Nusa
- Item Number
- 6S2016 201602 54-19
- Lens Material
- Polarized Glass (580G)
- Lens Curve
- Base 6
- Frame Material
- Bio-acetate (handmade)
- Frame Fit
- Wide
- Frame Size
- XL
- Polarized
- Yes
- Gender
- Women's
- MPN
- itemMatrix-36341
Frequently Asked Questions
- Are Costa Nusa sunglasses polarized?
- Yes. Every Costa Del Mar Nusa comes with Costa's 580G polarized glass lenses. Polarization eliminates horizontal glare reflected off water and wet surfaces, and the 580 filter blocks the wavelengths that cause the most eye fatigue in bright coastal light.
- What does 580G mean on Costa sunglasses?
- 580G refers to two things: the 580 nanometer light filter that blocks yellow light while enhancing color contrast for reds, greens, and blues, and the G for glass lens material. Costa's glass lenses offer higher optical clarity and scratch resistance compared to polycarbonate alternatives.
- What is Bio-acetate and why does Costa use it for the Nusa frame?
- Bio-acetate is a plant-derived cellulose acetate. It delivers the same premium look, depth of color, and smooth finish as conventional acetate but is produced with a lower environmental impact. Costa uses it in handmade frames like the Nusa for quality, aesthetics, and sustainability.
- Are the Costa Nusa sunglasses good for water activities?
- The Nusa is a coastal lifestyle frame rather than a dedicated sport-wrap. The 580G polarized glass lenses are highly effective on or near the water, cutting glare and improving visual clarity in bright conditions. The slightly oversized fit provides good coverage.
- What face shape do the Costa Nusa sunglasses suit?
- The Nusa is a wide-fit, XL frame with a slightly oversized silhouette. It is designed to suit broader face shapes and those who prefer a bold, fashion-forward look with substantial frame coverage.
- Are the Costa Nusa sunglasses handmade?
- Yes. Costa specifies that the Nusa frames are handmade. Handmade construction results in tighter tolerances and more consistent fit compared to injection-molded frames, and is a distinguishing feature of the Nusa's premium price point.
- Where can I buy Costa Nusa sunglasses?
- Island Water Sports carries the Costa Del Mar Nusa in store and online. We are an authorized Costa Del Mar retailer serving South Florida and shipping nationally.