Costa Half Moon Sunglasses

Each purchase of Half Moon Sunglasses by Costa supports crucial ocean ecosystem research.


Costa's Half Moon Sunglasses, a West Coast-inspired beach style that rides the mystique of epic ocean swells. Available in Tiger Shark as tribute to the icy water, huge swells and some of the largest sharks in the world that frequent Half Moon Bay. The straight temples, double-cut textures, and integrated spring hinges combine outstanding function and comfort with beautiful aesthetics. THIS COLORWAY SUPPORTS OCEARCH: Sharks are in trouble, and without them the ocean ecosystem could collapse. Your purchase helps fund research expeditions aboard OCEARCH, a marine vessel and at-sea laboratory that generates critical data and puts science on the side of sharks. The Bio-Resin Raw Material Process is part of the Kick Plastic initiative to reduce the carbon footprint and protect our planet's waters. The earth-friendly bio-resin frames are durable and lightweight, and hold their shape under the harshest conditions. 580g glass lenses offer superior clarity and scratch-resistant glass. Encapsulated mirrors (between layers of glass) are scratch-proof, and 20% thinner and 22% lighter than average polarized glass. In matte tiger shark frame with green mirror 580G glass lenses. FRAME FIT: Large Fit. Frame Width 131.0mm, Bridge Width 15.8mm, Lens Width 59.6mm, Lens Height 41.3mm, Temple Arm Length 125.0mm. Made in USA.
  • Portion of proceeds to shark research
  • Large fit
  • Straight temples, double-cut textures, and integrated spring hinges
  • Earth-friendly frames
  • 580G glass lenses


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  • Costa Half Moon Sunglasses $259
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