DO NOT BUY.
I ordered a chair from these guys back in January 2023 with a 3 year warranty and used it as a chair... not a resting post.
The headrest on the chair snapped off whilst I was sitting on it. I raised a warranty case, and Office Furniture Online's response was to suggest that I had been subjecting my chair to extreme circumstances. They would not fulfill my warranty case and had the balls to request me to pay to fix the case that their product had caused.
Terrible customer service. If your furniture breaks, do not expect any help from Office Furniture until you pay more for a product you have already bought!