COSTA C-LINE ADJUSTABLE RETAINER: The Costa C-Line adjustable retainer features ultrathin, lightweight coated wire with adjustable bead sliders to make sure your sunglasses stay put, on and off the water.

From end-to-end, the Costa C-Line Adjustable Retainer measures 20".

The Costa C-Line Adjustable Retainer is compatible with all Costa sunglasses.

Costa Del Mar Unisex's Costa C-line Adjustable Retainer Leash