Volumetric carpet ODC Zen two from Ogeborg
Available in five colors: cream, beige, green, coral, gray
https://www.ogeborg.se/en/kollektion/odc-zen/ 

Carpet can be any size
TurboSmooth open

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured taking into account PBR

Those who work in V-Ray versions 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. Choose Blinn, Phong or Ward - whichever suits you best