These square-shaped unisex sunglasses feature Grilamid TR-90 Nylon frames for a quality fit, flexibility and lasting durability in all environmental condition and polarized lenses for that selectively filter visually interfering light waves known as 'glare'. The elimination of direct and ambient glare results in superior visual clarity, definition, color transmissions and optical comfort. Frame Material: Grilamid TR-90 Nylon. Lens Material: Polarizeolycarbonate. Square frames provide a quality fit. Polarized lenses reduce glare and provide visual clarity. Lightweight and durable. Unisex. Lens width: 58 mm. (2.16 in.) . Medium fit. Imported.