DescriptionThis chain is non-slip design, exquisite workmanship, convenient and safe to use, can prevent the glasses from slipping, and is suitable for wearing a glasses when going out. It is also very simple and practical, unique, and can attract people's attention.Features-Material: Metal+silicone+crystal -Size: About71.00X0.50X0.50cm/ 27.90X0.20X0.20inch -Made of premium metal, crystal and silica gel materials, practical and durable for use.-It can be used as embellishments, exquisite workmanship, unique and beautiful.-It is a suitable accessory for glasses or other eyewears, with anti-lost function.-Suitable for glasses, sunglasses, eyewear, presbyopic glasses, reading glasses, etc.. -It has a simple design, but very practical in use, giving you a good using experience.