The Costa Del Mar C-Line Retainer is the perfect accessory for any active lifestyle. This retainer is designed to fit comfortably and securely around your head, allowing you to enjoy any activity without worrying about your glasses slipping off. The adjustable frame fits any shape and size, and the adjustable nose pads provide a custom fit that won't slip during your most vigorous activities. The durable frame is made from a lightweight material that won't weigh you down, and the comfortable straps won't pinch or bind. The Costa Del Mar C-Line Retainer is the perfect way to stay stylish and active without compromising on comfort or security.