1) Slight footrest pressure to close the ottomans 2) Handle activation: cable, outside handle and inside handle 3) Direct drive and double lock ensure security closing on both sides 4) Minimum stack-up design 5)Swivel parts are connected with bearings 6) The system uses the long life rivet joint design 7) Interchangeable on wood frame design 8) The back of the chair adopts the KD sleeve design, easy to pack and install 9) Material: iron, steel