https://ethnicraft.com/ru/en/p/10121205/nomad-indoor-outdoor-rug 
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Corona version 11
CoronaLegacyMtl + Vray Materials
In CoronaRender 6 and below CoronaLegacyMtl=CoronaMtl
CoronaLegacyMtl requires Corona Renderer version 1.5 or higher, as the maps are designed to use PBR (roughness-metallic)

Vray version 6
Vray materials are obtained using Vray-converter
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.
All maps are designed for the PBR roughness-metallic workspace