The 3D model is a 3D scan of a human boiled head. It is cleaned up and optimized in Zbrush. The positive of this model is the detailed anatomie of the head, nose, mouth and ears. As you can see on the pictures even details like moles are visible. The 3D model of the head comes with the glases (separate files). The 3d models of the ray ban glases are not the best quality. The 3D model of the head can be used as a reference for modeling.