Such a gorgeous and comfy chair! I bought it due to working from home for the foreseeable future and wanted something sturdy, yet comfortable. This was everything I wanted and more. Perfectly supportive, I use it for around 9 hours a day and haven't had an issue! 
Well with the money! 

Only issue I had was upon building. The instructions said to remove the cap on the gas canister I thought it meant the orange thing as there was no other cap, don't do that or the chair won't adjust height! Orange clip fitted back in fine and works a treat now