Costa Mainsail XL Men's Size 59 Injected Frame Matte Brown Smoke w/Gray 580G Lenses 06S9131-91310959

The Costa Mainsail XL in Matte Brown Smoke with Gray 580G Polarized Glass Lenses delivers expansive lens coverage and premium optics for the serious outdoorsman or angler. With its 59mm lens width, long 146mm temples, and wide total frame span of approximately 143.9mm, this frame offers broad wrap‑around protection. Yet it is classified by the manufacturer as a narrow‑fit geometry, making it an ideal choice for wearers seeking full‑size performance without overly wide temple spread. The 580G glass lenses deliver superior clarity, contrast enhancement, and excellent glare reduction. With rugged injected nylon construction, micro side‑shields, hooding to reduce stray light, and retainer‑ready temple tips, the Mainsail XL is engineered for extended wear in challenging outdoor, water, and sun environments.