Chair is fairly well manufactured And was easy enough to put together single handed but:
1. Whole chair took 25 mins to build, but a further 22mins to get the final screw in as it didn’t align properly. 
2. The chair itself is well put together, but is much firmer than I expected. I am hoping it will soften when it is broken in, but only time will tell. 
3. Whilst the massage (more vibrate) works, the heat function is not very effective. 
4.  The cable needed to power the massage and heat function is a little short for my home setup. You need an extension very near to the chair for it to reach effectively and still be able to move around (and at ground level, not desk height)
It was not an expensive chair compared to others I researched but overall so far I can only give it average scores. If you are expecting to sink into soft plush cushions this chair is not for you. It’s more like a bucket seat in a car (for comparative purposes).