Ergonomic Design: The curved seat back of kids desk chair perfectly fits the child's back and helps the child sit in a healthy posture Detachable Footrest：Convenient footrest of this computer chair is suitable for childs of different ages and added support to offer kids a better sitting experience，meanwhile develop a good posture of studying Safe Sit-Locking Casters: This kids desk chair with 360 degree rotating wheels provides convenience, designed with sit-brake wheels, which can be automatically locked when the pressure is over 66 lbs, but the wheels are easy to move when kids stand up Flip-Up Armrest andComfortable Cushions：The seat cushion of kids rolling chair is made of high density sponge pads which provide extra comfort for long time of sitting. 90° flip-up armrest can save more space Stable & Swivel and easy to assemble: The upgraded gas lift is stable and safe, and the seat height can be adjusted between 30.3-35.8 inch. You can quickly and easily complete the assembly with your child, usually in 15 minutes