Nio Eyeglasses by Ic! Berlin®. Color: Gun-Metal-Rough, Rough-Graphite, Teak-Black, Size: 46-18-127. Utilizing cutting-edge technologies and innovative methods, Ic! Berlin® creates real works of art that are less about showing style, but more about expressing an attitude. Handcrafted from premium-quality stainless steel, titanium, synthetic, and natural materials, Ic! Berlin® frames are robust, lightweight and ultra-modern accessories. Each frame features the original, no-screw hinge system specially developed by the brand - an avant-garde design that turns an individual look into a way of life.