1. First and foremost thing you must consider is to buy only ergonomic office chairs for yourself.
2. Secondly your office chair should be based on height adjustment mechanism.
3. Last but not the least, the 'Price' factor. Make sure that you compare the rates in the best possible way!

For more info visit:http://www.idealofficefurniture.com.au/office-furniture/3/Office-Chairs