is a new line of children's prescription glasses designed in Spain using the latest technology. Nano Cool Collection Frames are made in high quality acetate with spring hinges to ensure perfect fit for all types of faces. Each frame has a brushed effect by adding a different texture that creates that  cool wow frame.  Designed with the ultra fashion kids in mind, Nano Cool Spark  NAO2130146 Green Yellow will make a great transition for Nano Vista fans that want to remain fashionistas.