Product in the end is decent . Instructions left alot to consider , definitely want a drill with a hex bit  it’s a 2 person job and will take about 2 hours to assemble . There’s also something in the base that’s rolling around and clanky. On the positive , super deep seating , smooth glide . Hope they hold up . Pretty dang expensive for the quality- 823  update screws fall out , swivel isn’t great .