This Zol Kids Glasses Strap and Ear Hook helps kids have their glasses handy all the time and keeps 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. Cord lenght 6.5'' long and can stretchup to 9.5'' inches. Compact and lightweight design provides a comfortable feel, perfect for active kids. One year warranty directly with manufacturer.