COSTA DEL MAR FLY LINE SUNGLASSES - MATTE SANDEngineered for watermen who demand both performance and style, the Fly Line blends modern design with trusted features inspired by Costas best selling Reefton frame. Its 8 base wrap offers maximum coverage and protection from glare and the elements, while double injected Hydrolite on the nose and temple tips provides all day comfort and secure retention. Retainer ready temple tips let you attach any retainer, keeping your sunglasses safe during your