DescriptionThis chain is non-slip design, exquisite workmanship, convenient and safe to use, can prevent the glasses from slipping, suitable for wearing glasses when going out. It is also very simple and practical, unique and can attract people's attention.Features-Color:Black Coffee-Material:Silica gel, zinc alloy -Size: About30.00X0.50X0.50cm /11.79X0.20X0.20in -Made of high-quality silicone and zinc alloy materials, practical and durable. -Can be embellished, exquisite workmanship, unique, beautiful and practical. -This product is suitable for glasses or other glasses accessories, with anti-lost function. -Suitable for glasses, sunglasses, glasses, reading glasses, reading glasses, etc. -The design is simple, but very practical, giving you a good experience.