Swopper Ergonomic Seat / Stool

I've relisted this because original photos were too dark and not a great representation of the seat. Lightly used, in very good condition. Seat height adjustment and tension adjustment work as designed. Ultra suede fabric has been cleaned. I've included several photos of the top of the seat - micro suede is not to everyone's taste. Microsuede is made of tiny fibers that lie in a certain direction. When you brush against them, you change their direction, causing them to reflect light differently and appear a lighter or darker shade. * Seat height: adjusts from 22" to 27.5" * Seat size: 16" diameter * Base diameter 21.5" * Weight limit 250 lbs * 360° swivel * Spring tension adjustment * Laterally moves side to side * Chair weight: 25 lbs. * Ultra Suede Seat Key Features 3D Technology: The stool's unique technology allows for movement in all directions (forward, back, sideways, and up and down), promoting an active sitting posture. Dynamic Movement: The spring-loaded base and spring mechanism ensure continuous, gentle movement, which helps nourish intervertebral discs, strengthen core muscles, and keep joints fit. Ergonomic, Convex Seat: The seat's curved shape is designed to promote an optimal sitting posture and prevent pressure points on the thighs. Adjustable Vertical Spring Tension: Users can adjust the tension of the vertical spring to match their body weight, ensuring optimal movement and support. Back Strengthening and Posture: By keeping the body active, the Swopper encourages a straightened posture, strengthens the back and core muscles, and provides relief from back tension. Improved Circulation and Metabolism: The dynamic movement stimulates blood flow and metabolism, improving oxygen supply to the brain and preventing vein problems. The stool is manufactured in Germany by Aeris, emphasizing quality and movement-focused design.