The Smilen Eyewear® GothamStyle® Flex Collection: Our signature GothamStyle style of plastic frame with the added comfort of spring hinges. Trendy shapes, colors, and designs at value pricing and superior quality! Model: 10 Spring Hinge Size: 51-18-144 Colors: Matte Black: UPC: 725305920944 Black/Red: UPC: 712321025111 SIZE A B ED 51-18-144 51.10 36.80 52.80 ED ANGLE DBL STS CIRC. 154.8 18 128 144.1 Frames carry a two year warranty (for frame exchange only). Available colors for purchase are determined in the shopping cart "Color" menus. Available frame styles are indicated in the "BRANDS:" drop-down menus above.