Calvin Klein Metal Frame Grey Lens Men's Sunglasses CK7378S5817001. 58 mm square shaped grey non-polarized polycarbonate lens. Bridge Width: 17 mm. Arm Length: 145 mm. Black metal frame. 100% UV protection sunglasses. IMPORTANT WARRANTY INFORMATION: Please note that seller provides its own warranty for the products sold by seller; the manufacturer's warranty may not apply to products purchased from this seller. For additional warranty related issues or information, please contact us directly.