Mainsail XL Matte Tortoise with 580G Gold Mirror Polarized Glass lenses by Local Boy Outfitters

Built for the bold, the Mainsail XL Matte Tortoise sunglasses with 580G Gold Mirror polarized glass lenses deliver superior clarity, protection, and performance for those who demand more from their eyewear. Designed with an extra-large fit and integrated performance features, these sunglasses are ideal for serious anglers, boaters, and outdoor adventurers who need durable coverage and optimized optics in high-glare conditions.

Key Features

• 580G Gold Mirror Polarized Glass Lenses

  Premium glass lenses offer exceptional visual clarity and color enhancement. The gold mirror finish, backed by a copper base, is specifically designed to perform in high-glare environments such as open water and full-sun conditions. It delivers 12% light transmission for maximum contrast and reduced glare.

• Polarized for Maximum Glare Elimination

  Costa’s industry-leading polarization cuts glare off reflective surfaces like water, sand, and roads, making these sunglasses ideal for fishing, boating, or any sun-intense activity.

• C-Wall Lens Coating

  A molecular bond coating that adds durability by resisting scratches and repelling oil, sweat, and water. Helps maintain lens clarity in harsh environments.

• Full 100% UV Protection

  Blocks all harmful UVA, UVB, and UVC rays to protect eyes from sun damage during extended exposure.

• Integrated Micro Side Shields

  Built-in shields along the temples block peripheral light and enhance visual performance in intense sunlight, particularly near reflective surfaces like water or snow.

• Ventilated Nose Pads

  Designed to increase airflow and reduce fog buildup, keeping your vision clear even during high-output activity or humid conditions.

• Retainer-Ready Temple Tips

  Temple ends are designed to securely accommodate sunglass retainers, ensuring a stay-put fit while on the move.

• XL Frame Size

  Designed to provide broader lens coverage and a more secure fit for those with larger heads or who prefer an oversized frame feel.

• Comfortable, Lightweight Frame

  Despite the rugged build, the Mainsail XL delivers all-day comfort with a lightweight construction and balanced frame geometry.

• Includes Costa Case and Cleaning Cloth

  Comes with a durable protective case and microfiber cloth for safe storage and proper maintenance.

Specifications

• Frame Color: Matte Tortoise

• Lens Color: Gold Mirror

• Lens Material: Polarized Glass (580G)

• Fit: Narrow

• Size: Extra Large

• Lens Width: 59 mm

• Lens Height: 46.5 mm

• Bridge Width: 18 mm

• Temple Arm Length: 146 mm

• Frame Width: 143.9 mm

• Base Curve: 8 (wrap-around design)