In the scene, there is a model of the Porta Chair, Dantone Home, and three materials in different colors.
https://dantonehome.ru/products/kreslo_porta_tkan_heroy_44/ 
Size: length = 960 mm, depth = 860 mm, height = 700 mm.
Chair, polygon count: 21,902
Cushion + blanket, polygon count: 50,674
- Those working in V-Ray versions lower than 3.1, please note that the materials in the BRDF section have Microfaset GTR (GGX); if your version is older than 3.1, the BRDF field will be empty. Choose Blinn, Phong, or Ward – whichever is preferable for you.
For Corona render, it is recommended to use version no lower than 1.5.