Costa Del Mar Sunglasses - Official Online Store. WINTER DEALS. SUNGLASSES. SUNGLASSES. View all sunglasses. New arrivals NEW. Best Sellers.Browse a wide range of Costa Del Mar women's sunglasses in various styles, colors and patterns. On-trend Join the Sunglass Hut community! Subscribe to Sun Perks for exclusive access to the latest trends, sales & special offers. Subscribe! Shop the Costa Del Mar Aleta Polarized Sunglasses in Copper Silver Mirror with 100% UV Protection at Costa Del Mar online store. Free Shipping & Returns. Prescription Available.