High Quality::: The strap ring is made of high quality silicone rubber with good elasticity. The metal ring is longer than other metal rings, so it can be attached more tightly to your glasses. Flexible and durable High-quality material: : Glasses chain ends are made of high-quality silicone and stainless steel, soft and durable, anti-oxidation will not rust, can be close to the skin, provide you with a perfect experience. Universal size, fits most eyeglass chains. .Adjustable Comfort: The wearer can move the metal coil to adjust the grip of the glasses, slide up to lock, slide down to unlock, providing you with a comfortable experience. .WIDE APPLICATIONS:: Glasses chain strap ends are suitable for any craft project that requires a retaining ring. It is a must-have accessory for all kinds of glasses, such as sunglasses chain, sports glasses strap, etc., providing you with many conveniences. . Your order will be shipped from abroad, so please allow at least 14 business days for delivery as necessary due to ongoing delays in postal deliveries worldwide.