Specification:

1.Heavy-duty synchronize mechanism with seat slier,4-positions lockable for back & seat

2.nylon back frame

3.ratchet back

4.adjustable lumbar support

5.DIN 4550 Class IV gaslift

6.B350mm aluminum base(chrome)

7.BIFMA castor

8.PU adjustable armrest

9.cut foam

10.volume:0.205kg

11.NW:20kg

12.GW:22.4kg

13.Warranty:3 years