The main difference is the height range. 2 jointed: 69-115cm, 3 jointed: 64-129cm (excluding table top).   In general, for users with height shorter than 5″3 or taller than 5″10, we suggest using the 3-jointed model.  Any other users who are in between, we believe the 2 jointed model maybe sufficient.

It is hard to give a pure A or B answer as we believe different chairs fit different users, depending on the physique and preference of the users.  We suggest users to visit our showrooms and let us guide you through how to select the best chair for you.  There’s no one size fits all when it comes to ergonomic chairs.

Opinions vary according to different experts. Jack Callagha, professor in Waterloo’s Department of Kinesiology, has found that the ideal sit-stand ratio lies between 1:1 and 1:3.  Kevin Weaver, clinical assistant professor at New York University, suggests you should aim to stand for about 4 hours a day, sit for another 4 and switch every hour.  Chris Kolba, sports medicine physical therapist at Ohio State University, says you should aim to stand for as long as you can until you get tired.

We have numerous suppliers for ergonomic chairs and other chairs, price ranges from $2,000 to $36,000.  The more expensive ones are usually the ones that are branded.  Brands invested heavily in R&D and importing from overseas also make them more expensive (compared to those made in China).