These castors are designed for soft floors. PARAGRAF castors for hard floors are sold separately. The castors lock automatically, when the chair is not in use. May be completed with KOLON floor protector. Castors included.
Seat shell: Seat Wipe clean with a soft cloth dampened in water and a mild washing-up detergent or soap, if necessary. Wipe dry with a clean cloth.
Chair frame, swivel: Frame Wipe clean with a cloth dampened in a mild cleaner. Wipe dry with a clean cloth.
You sit comfortably since the chair is adjustable in height. http://www.ikea.com/au/en/images/products/snille-swivel-chair__18485_PE103447_S4.JPGSNILLE Swivel chair, blackhttp://www.ikea.com/aa/en/catalog/products/S59877710/598.777.10IKEA$29