These sunglasses I have, red mirrored ordered in black, especially for running. The frame is made of plastic and is black, has just strap and curved, mirrored glasses. This protects them completely from light and wind. The tint does not seem to be really dark to me, however, I did not have to get. Do not sit on any head ideal: Since you want to wear glasses as close to the head, it depends but then on the geometry of the skull on how high on the bridge of his nose, the glasses comes to rest, because the support on the nose is naturally not adjustable because it is a solid plastic frame. It looks partly strange - so well with me, but maybe you get used to it. I do not care, because the function is important to me. In the other, they have placed most, it looks cool. I can well imagine that it is also suitable as Bikerbrille. I think you can recommend it.