The Einstein 600 is a slim pair of eyeglasses for men, designed in the distinctive Flexon style. The rectangular frames are made in a lightweight, corrosion-resistant metal alloy that retains its shape for lasting beauty. The temples curve inward gently for stability, and come with coated tips for comfort behind the ears. Regular hinges are durable and easy to repair. Experience minimalist aesthetics and advanced technology in these Einstein 600 glasses by Flexon.