Mainsail XL Matte Black Sunglasses with 580G Blue Mirror Polarized Glass lenses by Costa Del Mar

Discover enhanced clarity, full-spectrum protection, and rugged style with the Costa Del Mar Mainsail XL Matte Black Sunglasses, featuring 580G Blue Mirror polarized glass lenses. Engineered for serious water and sun environments, this XL-sized frame delivers superior optics and maximum coverage for offshore fishing, boating, and full-sun exposure.

Product Description

The Mainsail XL builds on the popular Mainsail design with a wider, bolder fit, micro side shields, and increased lens coverage. Outfitted with Costa’s 580G Blue Mirror glass lenses, these sunglasses enhance color, reduce glare, and offer unmatched optical clarity in bright, reflective conditions. Designed with performance in mind, the matte black frame features vented nose pads and retainer-ready temples, making them a top choice for active outdoor lifestyles.

Key Features

• 580G Blue Mirror Polarized Glass Lenses – High-definition lenses that enhance color, contrast, and clarity while reducing glare from water and other reflective surfaces.

• C-Wall® Molecular Bond Coating – Resists scratches and repels water, oil, and dust for easy cleaning and durability.

• Encapsulated Mirror – Mirror coating is sealed between layers of glass for lasting protection and clarity.

• Full Polarization – Eliminates glare and improves vision in high-glare environments like open water.

• 100% UV Protection – Blocks harmful UVA, UVB, and UVC rays to protect your eyes from sun damage.

• Micro Side Shields and Hooded Frame Design – Reduces side light and peripheral glare for a focused visual field.

• Vented Nose Pads – Improves airflow to prevent fogging and adds comfort for long wear.

• Retainer-Ready Temples – Built-in compatibility with sunglasses cords or retainers for secure wear on the move.

• Base 6 Lens Curve – Offers moderate wraparound protection while maintaining optical precision.

• Matte Black Frame (XXL Fit) – Larger frame with a narrow-fit profile, ideal for wide heads that prefer a snug, secure fit.

Specifications

• Frame Model: Mainsail XL

• Lens Material: 580G Polarized Glass

• Lens Color: Blue Mirror

• Frame Color: Matte Black

• Fit: XXL / Narrow

• Lens Width: 59 mm

• Lens Height: 46.5 mm

• Bridge Width: 18 mm

• Temple Length: 146 mm

• Frame Width: 143.9 mm

• Lens Curve: Base 6

• Weight: Lightweight for glass optics

• UV Protection: 100%

• Polarization: Yes

• Included Accessories: Costa hard case and microfiber cleaning cloth