ERGO COLLECT Ergonomic Wobble Stool Chair, Adjustable Height Standing Desk Chair, Swivel Stool with Rocking Motion, Foam Cushion Non-Slip Base, Portable Stool for Home, Office and Classroom, GreyAdjustable Height for Any Workspace: Easily customize the stool height from 23. 2 to 33 inches using the pneumatic lift system. With a simple press of the buttons beneath the seat, this office stool accommodates a range of desk heights, including standard desks, standing desks, and countertops Comfortable Ergonomic Cushion: The flower shaped curved cushion of wobble stool is crafted for ergonomic comfort, reducing pressure on your hips and tailbone.