Muvman Sit-stand Stool (Black Seat / Black Base - Tall Version) 4 forward tilt of the spring strut: This means that you always sit at an optimum distance to your working surface - regardless of your height and physique. The Muvman stool prevents you from hunching your back as easily happens when sitting high. Comfortable, super soft seat: No congestion of the blood circulation thanks to a flexible, adaptable seat edge. Movement comes from the joint in the baseplate: This keeps your hips free and flexible and your leg muscles active, while improving the transport of blood back from the legs to the heart. Stable baseplate: The non-slip, non-scratch rubber rim gives you firm support. Practical grip: For easy carrying of the Muvman wherever you want to go.