This high back synchro executive chair is ideal for those who require comfort with maximum back support. The tri-curved spine shaped high back rest alleviates low and upper back pain whilst the positive lever less ratchet action allows the back to manoeuvre with ease into the most comfortable position for the occupant. The under seat synchro tension control allows the seat back to move in harmony with natural body movement using little muscular effect to change from reclining to upright position.