is a new line of children's prescription glasses designed in Spain using the latest technology. Nano Metal Frames Collection are made of Elaxtitan™ material bringing a new generation of flexible metal technology to this collection. Nano metal not only offers extreme flexibility and durability with fashion forward designs. Great choice if you are looking for something different  Nano Metal Sydney NAO160247 Gold Purple will make a great transition for Nano Vista fans that want to remain fashionistas.