While this stool isn't loaded with a ton of features, it is great at the price it is being sold. I cannot speak for longevity of the stool, since I just received it yesterday and assembled it today.This stool was extremely easy to put together. I noticed many people complained that the design was unstable due to the way they use an extension tube combined with a standard office chair lift, but I feel the way they implemented this design is very stable. The foot ring has a 4.5 inch area that mends the lifting mechanism with the extension tube. Once the chair is put together from bottom to top, following the correct directions in the diagram, the entire length is secure and very stable. I admit to not properly following the diagram at first, and exclaiming how it is too unstable-only to look at the diagram again to notice I had not followed the design properly.You can use this stool with or without the arms. I prefer no arms for my situation.The foot ring is fixed in place and cannot be adjusted. I didn't expect any adjustment at the price I paid. This stool is inexpensive.The top of the seat is 26" high at the lowest adjustment and 31" at the highest adjustment. The seat back has approximately 2" of forward to back movement that is fixed with a knob tightener on the bottom side. The seat is a little bit small, has only moderate cushioning and is upholstered with durable feeling material that does a look a little bit low end. It is only 17" from front to back of the cushion. (My office chair has 21" from front to back) The stool isn't recommended for individuals over 250 lbs and I would say, from my own personal experience, it would not be comfortable to a person of larger size. (I did used to weigh 275lb and I would have hated it. I now weigh 190 lbs and it is just barely deep enough to feel comfortable to sit on.)Overall, it is inexpensive, and has features to match its price. I feel like this was a very good value. When I made this purchase I did not want to spend 250-300 for a lot of features and higher end looking materials, because those features were not important to me for how I am using it. I would say to other buyers: if you want a high end looking stool with a lot of comfort features, go look elsewhere and spend more money. If you need a basic, but sturdy and fairly comfortable stool, then this could be the stool you want to buy.NOTE: Amazon should standardize the measurements for chairs and stools so people can more easily make buying decisions. A chair/stool purchase should include all relevant measurements in the description. Buyers should not have to rely upon the reviews from others to find out the actual size of a seat. The description should include the size of the roller base, lowest seat adjustment, highest seat adjustment, size of the seat width and front-back, size of the back, adjustment of the seat back forward-aft, angles for the seat and back adjustment, etc. (The only reason I bought my stool from Amazon was price, several other websites offer these kinds of measurements to help the buyer. Measurements only need to be made once and shouldn't affect the price of the item)