Product Name: Anti-slip Glasses Chain Model: YM1091-870 Color: Blue, Green, Red Material: Metal + Silicone Size: Approximately 70Cm, excluding both ends. Due to manual production, there may be a 1-3 cm error. If you are concerned, please purchase with caution! Weight: Approximately 10G Features: Anti-slip glasses chain, tough and sturdy, finely crafted, with a good electroplated texture. It can be placed at the end of the glasses to prevent the glasses from slipping off during exercise. It is suitable for matching with various glasses and clothing. You can take off the glasses at will and wear them on the chest. Whether it is for sports, outings or attending banquets, it is your favorite glasses accessory. Usage method: First, place the rubber loops at both ends of the glasses chain around the temple of the glasses. Then, use the metal clips on the rubber loops to secure the temple of the glasses and fix it in place.