In order to block much more blue, we upgraded the coating to more than 12 layers and visable on both side of the lens, the coating may have a little result in some reflect lights back into eyes from the inner side.
PRODUCTS DIMENSION - Frame material is Memory Titanium, Lens width about 1 7/8 inches (47mm), Frame width about 4 15/16 inches (125mm), Lens height about 1 9/16 inches (39mm), Frame height about 1 5/8 inches (41mm), Bridge (DBL) about 1/2 inch (13mm), Temple length about 4 15/16 inches (125mm), with spring hinge, fit 3-8 years children.