Vintage Dollond & Aitchison Eyeglasses Frames Flex Hinges Tortoise With Tag Lightweight with flexible hinges in tortoise style frame. I have two vintage pairs available. * Size: Medium * Material: Metal, Plastic * Shape: Browline * Spring Hinges: Yes * Color: Tortoise / Gold * Eligible for Progressive / Bifocal: Yes * Gender: Unisex * Type: Full Frame 145 * “New” vintage as no prescription inserted, original tag plastic lenses * 2 pairs of Spectra-light frames available. Please see photos for details on measurements. The tortoise style Dollond & Aitchison Vintage Eyeglass Frame for men and women.