The Smilen Eyewear® Trend Spotter®, Eyeconomy®, and Broadway® Collections: These Smilen Eyewear lines are perfect for managed care and frame/lenses packages. They include a wide range of styles and features with the highest quality in the industry! Model: Flex+ 23 Spring Hinge Size: 52-21-140 Colors: Black: UPC: 701220866185 Crystal: UPC: 701220866680 Grey: UPC: 701220866550 Leopard: UPC: 701220866673 SIZE A B ED 52-21-140 00.00 00.00 00.00 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.