With the SUN-FLEX®Active chair, you can intuitively stimulate your heart muscles, strengthen your back muscles and improve blood circulation. We recommend sitting with your legs balanced. This puts your body in a position similar to riding a bicycle or horseback riding. The active sitting function is ensured by the dome-shaped base. Thanks to the excellent selection of high-quality materials and the ease of use - simply pull the lever under the seat to adjust the height - the SUN-FLEX®Active will be your favorite part of your workplace for years to come. • Product dimensions (W x H x D): 31 x 71 x 31 cm • Seat: Ø31 cm, base: Ø29 cm • Adjustable height 62-71 cm, gas spring • Anti-slip base, grooved natural rubber base • Chair covered with fabric (110,000 Martindale) • Frame made of steel covered with ABS plastic • Maximum load capacity: 120 kg • Material: fabric, steel, ABS plastic • Color: frame black, seat black