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 15/16 inches (49mm), Frame width about 5 1/8 inches (130mm), Lens height about 1 5/8 inches (42mm), Frame height about 1 3/4 inches (44mm), Bridge (DBL) about 9/16 inch (15mm), Temple length about 4 15/16 inches (125mm), with spring hinge, fit 5-12 years children.