Massage Plastic Modern Executive Ergonomic Office Chair 9D Armrest Foldable Swivel Extendable Adjustable Height

1.Special mesh fabric on back and seat.
2.Plastic headrest
3.350 aluminum base
4.60 mm PU castors
5.4 levels locking for back,4 points massage on lumbar
6.lift up and down,reclining,leisure angle mechanism,with handle for seat remove
7.80L 4cm sinking class 4 gas lift.
8.9D aremrest
9.with footrest