Chain size: Length: 27.55 inches/70cm, each piece can be reused multiple times. The size of the mask chain can be adjusted through a lobster clasp, making it suitable for everyone to use. The lobster claw buckle fits all my mask rings. It will not be entangled by long hair. Why do we need to wear glasses? We always keep putting them down, but we can't find them. Do you know how difficult it is to find glasses when you need them to see things! You need these straps so that you can tie them around your neck. If you wear reading glasses, you know where your glasses have always been. So comfortable, you wouldn't know they were right around your neck. The way they hook onto the glasses arm is great. When you exercise with glasses on, they always come off and may damage your expensive glasses, so glasses chains are a good choice to maintain your property If you don't want the "old lady" glasses chain, then these are too perfect. You can match the colors with the clothing of the day. The two ends are adjustable, so you can almost wear them on all glasses. Can be used as necklaces, bracelets, eyewear chains, decorative chains, bag decorative chains, clothing accessories, and bag decorative chains Silicone buckle can be removed and worn as a necklace An elegant retro chain that easily complements your wardrobe