Bar or office chair.
cool stool
https://mdd.eu 
Minimalism and comfort – those are the two features that characterize the Cool chair. Adjustable height and swivel seat allow you to adjust it to your own requirements. Perfect for desks with height adjustable worktops as well as long phone conversations in the Hana booth. Cool seat used for office work does not use additional space, which makes it an ideal chair for work in the sit and stand system.
W:300mm D:240mm H:Seat:540-755mm
Quint Perch
https://www.westelm.com/products/quint-perch-qp1-h9460/?pkey=coffice-chairs 
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in 1 object
Polys 75 904
Verts 76 520
total
Polys 1 138 688
Verts 1 147 928
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In the archive:
-Max 2014 for V-ray+Corona;
-FBX 2010 for V-ray+Corona;
-maps (textures).
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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 - whatever suits you best.
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For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured with PBR in mind.