{"product_id":"costa-del-mar-mens-tuna-alley-rectangular-sunglasses","title":"Costa Del Mar Men's Tuna Alley rectangular sunglasses, Matte Black\/Grey Blue Mirrored Polarized-580g, 62 mm","description":"\u003cp\u003e\u003cstrong\u003eCosta Del Mar Men's Tuna Alley sunglasses are a rectangular, matte-black frame with premium 580G grey-blue mirrored polarized glass lenses built for bright, open-water conditions.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for anglers and outdoorsmen who demand clear, glare-free vision and rugged durability, these Tuna Alley sunglasses pair a classic rectangular silhouette with Costa's top-tier 580 glass lenses. The mineral glass construction offers exceptional optical clarity and scratch resistance, while the grey-blue mirrored polarizing filter reduces intense sunlight reflections—making them ideal for offshore fishing, boating, or any bright-day outdoor pursuit. A protective case and microfiber cleaning cloth are included to keep the glasses safe and ready to use.\u003c\/p\u003e\n\n\u003ch3\u003eHow do the 580G lenses improve visibility on the water?\u003c\/h3\u003e\n\u003cp\u003eThe 580G mineral-glass lenses are engineered to cut glare and enhance contrast so you can spot details beneath bright reflections. Their hard-glass surface resists scratches and maintains optical purity longer than most plastics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMineral glass provides higher clarity and more precise optics than standard polycarbonate lenses.\u003c\/li\u003e\n  \u003cli\u003ePolarized filter eliminates reflected glare from water and wet surfaces for safer, more comfortable viewing.\u003c\/li\u003e\n  \u003cli\u003eGrey-blue mirror tint is tuned for intense sun, reducing overall brightness while preserving color balance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat frame features make the Tuna Alley suitable for active use?\u003c\/h3\u003e\n\u003cp\u003eThe Tuna Alley frame is lightweight yet sturdy, with a rectangular shape that stays close to the face for stable coverage. The matte-black finish reduces shine and helps the glasses blend into a variety of outdoor gear setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRectangular silhouette for broad eye coverage and a modern, versatile profile.\u003c\/li\u003e\n  \u003cli\u003eDurable construction that withstands daily use on the water or in the field.\u003c\/li\u003e\n  \u003cli\u003eMatte black color reduces visual distractions and pairs well with activewear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the mirrored polarized lens color affect performance?\u003c\/h3\u003e\n\u003cp\u003eThe grey-blue mirrored treatment is aimed at full-sun environments, reflecting intense visible light and enhancing comfort during midday conditions. It preserves true-to-life colors while dampening glare, making it easier to read waves, instrument displays, and distant objects.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMirrored finish decreases light transmission for very bright conditions.\u003c\/li\u003e\n  \u003cli\u003ePolarization removes horizontal glare common on open water surfaces.\u003c\/li\u003e\n  \u003cli\u003eColor balance helps maintain natural tones for reliable visual judgments outdoors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat accessories are included and how should I care for them?\u003c\/h3\u003e\n\u003cp\u003eEach pair ships with a protective hard case and a soft cleaning cloth to protect the lenses when not in use and to remove smudges without scratching. Proper storage and gentle cleaning extend the life and performance of the lenses and frame.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHard protective case guards frames and lenses during transport and storage.\u003c\/li\u003e\n  \u003cli\u003eMicrofiber cleaning cloth safely removes fingerprints and salt spray without abrasives.\u003c\/li\u003e\n  \u003cli\u003eStore in case when not worn; rinse saltwater with fresh water and dry before storing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Costa Del Mar Tuna Alley in matte black with grey-blue mirrored 580G lenses is aimed at serious anglers, boaters, and outdoor enthusiasts who need top optical performance in bright, reflective environments. If you value scratch-resistant glass optics, effective polarization, and a stable, sporty rectangular frame, these sunglasses are built to meet those needs. They suit anyone who spends long hours on the water, requires accurate visual detail at distance, or prefers premium lens materials and a contemporary look for everyday outdoor wear.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the 580G lenses polarized?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the 580G lenses are polarized to cut horizontal glare and improve visibility on reflective surfaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What size are these lenses?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: These Tuna Alley sunglasses feature 62 mm lenses, offering broad coverage and a comfortable fit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Costa Del Mar","offers":[{"title":"Default Title","offer_id":48031160860833,"sku":"B00AB1ZCBA","price":644.19,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/costa-tuna-alley-front-view.jpg?v=1791424534","url":"https:\/\/canadiansporting.ca\/products\/costa-del-mar-mens-tuna-alley-rectangular-sunglasses","provider":"Canadian Sporting","version":"1.0","type":"link"}