This Zol Kids Glasses Strap and Ear Hook help kids have their glasses handy all the time and keep glasses in place. It is simple to use and will fit most styles of kids' glasses. Has two (2) silicone temple locks and a cord set. The cord length is 6.5'' long and can stretch up to 9.5'' inches. Compact and lightweight design provides a comfortable feel, perfect for active kids. One year warranty directly with manufacturer.