Zoff SMART Zoff Smart Sunglasses, Glasses, Eyeglasses "Zoff SMART" combines "design" and "functionality." The main body material uses "ULTEM," a special plastic. It's a high-performance material that excels in "elasticity" as well as "flame resistance" and "heat resistance." The weight is only "about 9.4g" excluding the lenses, making it ultra-lightweight. Despite that, it's a series that also boasts toughness. (Above information from the manufacturer) - Frame Color: Brown - Lens Color: Black (with prescription) - Design: Square - Material: Metal and Plastic - Temple Design: Two-tone Thank you for viewing.