Crafted for life on and off the water, the Costa Mainsail sunglasses combine bold style with unparalleled performance. The rectangular frames, made from durable nylon and propionate, offer a sleek, clean design in classic black. These Costa sunglasses feature mirrored, polarized grey lenses that cut glare, enhance contrast, and provide 100% UVA/UVB protection, ensuring clear, comfortable vision in intense light. Whether exploring offshore horizons or coastal trails, these polarized sunglasses for men are built to perform every step of the way.