In most cases, a man wearing a pair of metal eyewear is of grace and intelligence. Still some guys look very handsome with semi rimless metal eyeglasses frame. Perhaps, you can let him try. Of course, you shall consider his face shape and his clothes styles so as to choose the best suitable pair. If he often wear casuals, you can try black full frame plastic eyeglasses or other colored plastic eyeglasses frames. If he often wear suit, you can consider metal frame eyeglasses for him.
