The Costa C-Line Adjustable Retainer, the perfect solution for keeping your Costa sunglasses secure while on the move. Engineered with innovation and designed for comfort, this adjustable retainer is the ideal accessory for every adventure. Key Features: Customizable Length: With an end-to-end measurement of 10 3/4 inches in its shortest form and 17 inches when fully extended, the C-Line Adjustable Retainer offers versatility to suit your preferred fit, ensuring optimal comfort and security. Ultra-Thin, Lightweight Coated Wire: Crafted from ultra-thin, lightweight coated wire, this retainer provides durability without sacrificing on comfort. You'll barely feel its presence, allowing you to focus on enjoying your activities to the fullest. Adjustable Logo Bead Sliders: The C-Line Adjustable Retainer features innovative adjustable logo bead sliders, allowing you to achieve a customized fit with ease. These sliders not only offer functionality but also provide a streamlined profile when worn, enhancing both style and performance. Flat, Low-Profile Temple Attachments: Designed for convenience and comfort, the flat, low-profile temple attachments ensure a secure fit without adding bulk. Say goodbye to discomfort and hello to a hassle-free experience. Whether you're hitting the slopes, casting a line, or simply soaking up the sun, the Costa C-Line Adjustable Retainer is the ultimate accessory for keeping your shades secure and stylish.