Renders for preview are made in Corona Render 10
On the Corona Legacy Mtl model
Conversion of materials for V-Ray was done with V-RayMax Converter PRO

The objects are modeled for anti-aliasing and have a turbosmooth modifier assigned to them:
in viewport - 0 iterations
when rendering - 2 iterations,
stacks are not collapsed

All textures, materials and objects are logically named. Texture resolution is 2048x2048. Most textures are seamless.

The set includes 5 pairs of rubber shoes in neutral, calm colors: boots / half boots / clogs
The models are suitable for hallways, dressing rooms, shoe racks, shops, storage rooms, utility rooms

"For Corona Render: it is recommended to install version not lower than 1.5, since the glossiness of materials is configured taking into account PBR.

Those who work in V-Ray version lower than 3.1, be careful. In the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you."