https://www.amazon.in/Generic-unbranded-CBRNE-V...
Mesh Ventilation Back Rest with Lumbar Support
https://www.desidime.com/forums/hot-deals-online/topics/mesh-ventilation-back-rest-with-lumbar-support?page=1#post_6280735
Not returnable and most of the people seem to get the damaged product. Seems they sell mostly around this price. I would consider buying it below 90/-