The sleep company has excellent gaming chairs. Office chairs too but their gaming chairs are insane. Just my opinion.  
 You can try Green Soul too.

Software Engineer

I’ve seen Green Soul is the most common.

System Engineer

Please suggest a good ergonomic chair to use for wfh for long hours sitting? Budget 10k15k INR

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Please suggest a good ergonomic chair to use for wfh for long hours sitting? Budget 10k-15k INR