After the year we all experienced, and having two broke down office chairs that matched the total BS and broken system that we experienced throughout, it was time for something new. That being said, these chairs are so comfortable and a breeze to assemble. The hydraulics are super smooth. The 5 castor wheels are sturdy and allow the chair to glide with ease, even on carpet.  And seriously, the seat has a fantastic contour for your back and just the right amount of seat cushion. These desk chairs are ultra-modern, sleek, and the 5 chrome extension legs are stunning. This is a must-have for anyone looking for a desk chair that has some style. I purchased the black version. Amazing!!!