If you're looking for a way to keep your glasses safe and within reach at all times, an eyeglass chain is the perfect solution. Eyeglass chains come in a variety of styles and colors. 100% leather. Flexible and adjustable: the buckles at both ends of the glasses cord can be adjusted up and down, easy to install on the glasses frame, not easy to fall off. The black toggle switch on the cord adjusts the length of the goggle cord. The 27-inch eyeglass straps accommodate all head sizes and fit comfortably even when your neck is thick. Practical: The glasses retainer is flexible and adjustable, can be used for all types of glasses, such as sunglasses, swimming goggles, sports glasses, reading glasses, etc. High-quality leather material: The glasses straps are made of high-quality leather material, not easy to age, not easy to break, durable. Fashionable color matching: the glasses chains include red, black, brown and gray colors, which can be easily matched with glasses and clothes of different colors