The texture paths are relative mapped to the .blend file, if you follow the steps below, the file will be set up in no time.

1) Please create a folder in which you place the unzipped .blend and the 'textures' folder.
2) Open your .blend file and enjoy the asset :)

By doing this, the textures will appear on the mesh without additional work needed.

The clean, white product images were created with a studio setup which is included in the delivered .blend file.
The studio is in its own collection and can be easily enabled or disabled.