Check the listing for details. COSTA DEL MAR SUNGLASSES BOW LINE RETAINER STRAP GREY BLUE HOLDER ROPE. Condition: New with tags. Listed at 10.00 USD. Introducing the Bowline Silicone Retainer: Keep your glasses secure and stylish with our innovative silicone retainer. Crafted from high-quality silicone material, this retainer is designed to provide a comfortable and secure fit for your eyewear. Its sleek and modern bowline design adds a touch of elegance to your glasses while ensuring they stay in place during any activity. Whether you're hiking, running, or simply going about your daily routine, our Bowline Silicone Retainer offers reliable support and durability. Say goodbye to constantly adjusting your glasses and hello to worry-free wear with our premium silicone retainer. Order yours today and experience the perfect blend of style and functionality!