This is an upgrade of our other saddle stool (ASIN: B07F8NXBXD). Compared to previous item, we used one of the best wheels on the market, which made it quieter and smoother when it rolled. At the same time, we kept all the other classic configurations. Why should you choose this item? First, High quality saddle shape Saddle seat design for extra comfort on your back and spine,increase comfort and productivity. Second, More appropriate adjustable height Different from those low stool, this saddle chair can adjust the height of 21.5"-28.5", about 4 inches higher than normal stool, more in line with actual needs. Third, Wheels roll smoothly The rollerblader wheels do not damage my hardwood or hard surface floors,very quiet and smooth. At the same time,the cast aluminum castor frame is light and very strong. At last, Super easy to assemble It is very easy to assemble, you can assemble this stool in 3 minutes, without any tools, just a simple guide. (Assemble instructions are included in the package) Weight capacity : 350 lbs.