your Content Library or Smart Content tab to see the new materials under People > Genesis 9 > Clothing > Roommate Shirt > Materials .

Based on marketplace listings like Renderosity and 3DDaz , here is the standard "Readme" text and content list associated with this type of add-on:

: Detailed maps including Diffuse, Bump, Specular, and Normal maps.

The file is a texture expansion pack for the dForce Roommate Shirt, a 3D clothing asset for the Genesis 9 figure in DAZ Studio.