Technical specifications of Rad system office chair model E402S leather  Specifications  Back dimensions  48X54.5 cm  Insole dimensions  51X49.5 cm  Base material  Iron  Wheel material  Metal  Batch cover material  Plastic  Floor cover material  Artificial leather  Foam material  Hot foam  Minimum height  48 cm  Maximum height  52.5 cm  Other Details  Seat width (width) outside 57.5 cm Internal width between the useful surface of the handles 47 cm The length of the chair 68 cm The useful length of the handle is 27 cm  Back frame  Wood  Back adjustability     Base lock (seat wheel)