Mens Oakley Castel Sunglasses. Oakley® revisits the high wrap frame with Castel, a shield design sunglass with a more relaxed silhouette than its predecessors. Castel features an O-Matter™ frame, which provides lightweight durability, as well a three-point fit design for comfort. Black Ink frame with Prizm Grey lens; allows 17% light transmission, ideal for extreme light conditions and will increase contrast. Oakley Castel Sunglasses