It has been about 1.5 years with these chairs. I work from home so this review is based on daily use of this chair. 

This chair is super uncomfortable to sit on for long periods of time. The screws that hook up the chair to the base are CONSTANTLY falling out (I.e they slowly start popping out and by the end of the week, you’re left with one screw holding the chair together). Subpar quality. I just don’t get what the deal is with selling junk Fed up and will unfortunately have to purchase new chairs.