features:-STABLE AND STURDYNYLON BASE; PU CASTER WHEELS-BUTTERFLY ADJUSTING MECHANISM; 360 DEGREE ROTATION-FULL BACKWARDS BACKREST SWIVEL FOR A FLAT POSITION-CAMBER PVC ARMREST-DETACHABLE HEAD AND LOWER BACK PILLOWS-FULL SYNTHETIC LEATHER FINISH-100 mm gas lift system-350 mm nylon base arms-Material..