Comfortable computer gaming chair from Ikea made in collaboration with ASUS ROG. Height adjustable.

The model is made in size and photo from the manufacturers website:
https://www.ikea.com/ru/ru/p/matchspel-matchspel-stul-dlya-geymerov-bumstad-chernyy-00507607/ 
https://www.ikea.com/ru/ru/p/matchspel-matchspel-stul-dlya-geymerov-bumstad-belyy-60507609/ 

System units of the model: mm.

Dimensions:
height 1245 mm
width 650 mm
depth 650 mm

On the model in the scene the Turbosmooth modifier is assigned in the Render Iterations = 2 mode which is applied only during rendering.
In the obj file the model is saved with the applied Turbosmooth.

All objects have normal names.
All materials have convenient names.

Model weight without Turbosmooth:
35122 polygons
35357 vertices

The Pivot Point is centered on the model.

Who works 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. Choose Blinn Phong or Ward – which is preferable for you.

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