COSTA | Mainsail Sunglasses - Tortoise size-40x34 in the great state of

in the great state of North Carolina

Keeps drinks cold 24+ hours and hot 3+ hours

The unique neodymium magnetic system allows the glasses to come together at the bridge

and strength into the KOI AWB® collection

comfort grip shoulder straps for easy all-day carrying

COSTA | Mainsail Sunglasses - Tortoise size-40x34 in the great state ofFor the performance and style you need on and off the water, our Mainsail frames are your go to pair for every outing and adventure. Built with the same high quality materials and features you want everywhere from the beach to the big blue, Mainsail frames help keep excess light out with micro side shields and hooding, your frames in place with improved Hydrolite grips on the temples and help keep sweat and water out of your eyes with eyewire drains