The carlisle operator chair features a posture curved seat with an under seat skirt for a comfy sit complete with a sculptured medium backrest the carlisle also includes seat and back adjustment to suit your comfort needsposture curved seat with under seat skirtinflatable lumbar supportback height adjustmentseat height adjustmentback rest can be free floating or locked to suit the userdimensionsseat width 510mmseat depth 490mmback width 500mmback height 570mm seat height 450 570mm