Designed for the real demand: Most of the stools are very convenient for the short people,but because the regular stools are very small,for big guys or adults, once sitting on it,his / her butt will be exposed to the stool seat,which is a very bad experience. So we designed such a stool with wheels. 1.Large rectangular stool seat Unlike those small round stools,this 21"×13.2" rectangular rolling stool can perfectly support your butt and make you sit more comfortably. 2.Larger adjustable range The larger adjustable range allows you to get a lot of what you need without standing up, allowing you to use this adjustable stool in more places.(Eg kitchen, office,classroom or hospital,etc.) 3.Sturdy Base and Smooth Wheels Don't worry about this stool chair being easily damaged,this aluminum tripod is very sturdy. At the same time,this high-quality wheel can be used on tiles,hard boards,or even concrete,and you don't have to worry about scratching the floor. Weight Capacity :400 lbs. (If you have any questions within 1 year,you can contact us for replacement)