Why should you choose this saddle stool chair with backrest ? First, Saddle seat design for extra comfort on your back and spine, increase comfort and productivity. The back of this saddle chair is adjustable, the adjustment Angle is 80° to 110 °, which can meet the needs of most people. Our saddle seat made of 100% molded foam,very comfortable and elastic, not deformed.It can give you a good support and long-term comfort, you can use it for about 8 hours a day. Second, With advanced technology, the back of the saddle is smooth and round. It has no ugly line compared to some low-end products, which makes the product live longer. Finally, Adjustable height: 21"-28",higher than ordinary stools, more suitable for a variety of scenarios. Suitable for kitchen, living room,office, clinic, salon,etc. Item Features 1. Adjustable height of 21 "-29" for use in more workplaces. 2. The unique saddle structure provides more comfortable support and helps maintain a sitting position. 3. 21" aluminum base frame, larger and more stable 4. Smooth wheels, no noise, safe for all floors 5. Weight capacity :400 lbs. If you have any questions, please contact us through Amazon or after-sales email. You will get a satisfactory solution.