I purchased one of these a couple years ago but my son took it over when his college switched to online learning and he came back home. We set up another workstation and purchased another one of these for me (again). Super comfy and adjustable. Like that it is mesh and breathable under you. We both feel you can sit for a long time still feel supported and the mesh doesn't flatten like a padded chair.
Very sturdy construction and easy to assemble. Very very comfortable and adjustment options are great Mesh fabric breathes very well and ability to sit at different heights and back/lumbar tensions are really good for my back and knees.