Very impressed! This task chair is so much better than I thought. It was very easy to build & put together. All the tools worked out great! Took like a half hour or so to build. The base is very even, the wheels slide nice & smoothly & the side arms are even & upright. Comfortable to sit in all day. I added a pillow to mine & draped a blanket it over it to make it homier. I like that you can raise it up & down to match your desk height. The back is high up so you can lean back enough in comfort. Perfect chair & it definitely exceeded my expectations!