ASSEMBLY

As with all my past chair reviews i start by mounting the 60mm caster wheels onto the 5-star aluminum base.

These caster wheels may not look as good as 70mm ones do but they get the job done (and they are quite silent too).

Attaching the class-3 gaslift is next and as with most ergonomic office chairs there’s no cover to go over it.

Next, I attach the 3D armrests and the adjustment mechanism onto the seat as seen above.

Each 3D armrests require 3 Allen screws (4 for the adjustment mechanism).

Attaching the backrest to the seat requires using 3 Allen screws (just like with past models there's a bit of leeway here so you might want to try various positions first).

The double adjustment lumbar support mechanism can be raised 5cm (1.9”) and extend 3cm (1.2”).

Sihoo has once again used an adjustable headrest which can be raised up to 9cm and rotate back and forth (45 degrees).

With the upper body ready it’s time to place it onto the class-3 gaslift.