Costa Del Mar Isla Sunglasses
Costa Isla Sunglasses: Built for the Water, Styled for Everywhere
The Costa Del Mar Isla is a women's round-frame sunglass that pairs Costa's most advanced lens technology with a lightweight acetate frame inspired by the colors of tropical reefs and ocean shallows. The result is a sunglass that performs on the water and looks equally at home off it.
580G Polarized Glass Lenses
Every Isla comes fitted with Costa's 580G glass lens. The 580 designation identifies Costa's proprietary color-enhancing filter spectrum, which blocks high-energy blue light while passing wavelengths that sharpen contrast and reveal detail beneath the water's surface. The G suffix means the lens substrate is optical glass, the densest, most scratch-resistant material Costa uses. Glass holds its optical clarity longer than polycarbonate, stays free of micro-abrasions that soften contrast over time, and delivers the flattest, most distortion-free view available in a polarized sunglass.
The polarization filter cuts reflected glare from water, sand, and wet pavement. Combined with 100% UV protection blocking both UVA and UVB, the Isla delivers a complete optical package in every lens.
Round Acetate Frame
The frame is medium-sized with a round shape, cut from acetate rather than injected plastic. Acetate is a plant-derived cellulose material prized in premium eyewear for its depth of color, its slight flex under hand pressure, and its ability to hold a precise fit over time. The Isla's frame is sized for a Regular-Wide fit, giving the lens a generous field of view while still staying proportional to a wide range of face shapes.
The temple arms carry Costa's signature wave logo and are designed for a secure, comfortable fit during active wear. The overall construction reflects the brand's positioning as a serious performance sunglass: no unnecessary hardware, no loose tolerances.
Designed for the Coast
Costa Del Mar builds every pair of sunglasses around the demands of anglers, divers, and watersports athletes. The Isla extends that ethos into a versatile silhouette, combining the coverage of a round lens with the lightweight handling of an acetate build. Whether you are on the water chasing a set or settled on the sand post-session, the optics perform at the same level.
Island Water Sports carries Costa Del Mar in store in South Florida and ships online. Questions about fit or lens selection? Call us at 954-427-4929.
Free Shipping, No Minimum for IWS Beach Club Members.
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Specifications
- Brand
- Costa Del Mar
- Model
- Isla
- Lens Technology
- 580G Polarized Glass
- Polarization
- Yes
- UV Protection
- 100% UVA/UVB
- Frame Material
- Acetate
- Frame Shape
- Round
- Frame Fit
- Regular-Wide
- Intended Use
- Watersports, Lifestyle
- Gender
- Women's
Frequently Asked Questions
- Are Costa Isla sunglasses polarized?
- Yes. Every Costa Isla comes with a polarized 580G glass lens that eliminates reflected glare from water, sand, and wet surfaces while enhancing color contrast and detail.
- What is Costa 580G?
- 580G is Costa Del Mar's top-tier lens specification. 580 refers to the color-enhancing filter that blocks high-energy blue light and sharpens contrast. G means the lens is made from optical glass, which is denser and more scratch-resistant than polycarbonate and delivers the flattest optical clarity in the Costa lineup.
- What frame material is the Costa Isla?
- The Isla frame is made from acetate, a plant-derived cellulose material used in premium eyewear for its rich color depth, slight flex, and long-term fit retention. It is not injected plastic.
- What face fit does the Costa Isla have?
- The Isla is listed as Regular-Wide fit, giving it a generous lens field of view that suits a broad range of face shapes. The round silhouette is mid-sized and proportional for everyday and on-water wear.
- Does the Costa Isla provide UV protection?
- Yes. The Isla lenses provide 100% UV protection, blocking both UVA and UVB radiation in every pair.
- Can I buy Costa Isla sunglasses at Island Water Sports?
- Yes. Island Water Sports carries Costa Del Mar Isla sunglasses in store in South Florida and online. For questions, call 954-427-4929.
- What is Costa Del Mar's return policy?
- Return and exchange policies are set by Island Water Sports. Contact us at 954-427-4929 or visit us in South Florida for details on returns, exchanges, and Costa's manufacturer warranty.