All parts of the model are hierarchically linked for easy posing and animation. The pivot points are in the centers of rotation of the model parts. System units: cm.
To avoid stretching the UV, it's recommended to use opensubdiv. I recommend using OpenColorIO in Vray (required vray standalone, only he can save the colors of OCIO) to get a more realistic render. Settings for OCIO: Input Colorspace - Utility-Linear-sRGB Display device - ACES View Transform - sRGB or Rec.709
A little more for Vray users, when importing textures, gamma values should be as follows:
In the archives there are textures for different renderers: Textures for Vray.zip - default (Unzip to a folder with .max project) Textures for Cycles.zip - optional Textures for Corona.zip - optional Textures for KeyShot.zip - optional