Leitz Active Sit Stand Stool, Height Adjustable Round Swivel Computer Workstation Desk Seat, Ergo Cosy Range, Velvet GreyStylish and ergonomically designed sit standing stool to keep you active all day Switch between sitting and standing to promote muscle movement and improve posture Rounded base encourages you to rock and swivel to stregthen your back Easy to adjust the height between 45 79 cm with red release buttons for safety Stool remains strong and stable at any height Lightweight design making it easy to move from room to room Ergonomic seat is made from durable,