Costa Spearo Polarized Sunglasses - Whether you're in the water, on the water, or near the water, the Spearo is sleek and stylish with performance features to keep up with your long days on the water. Named for spearfishers — the silent hunters of the sea - the lightweight - yet sturdy bio-resin frames boast vented nosepads, nonslip and keeper-ready temple tips, and our integral hinge and CAM system construction for added comfort and durability.