There are many things to look out for when picking a good office chair. A good office chair should be comfortable and contain features such as a good back support, multitude of adjustable positions, lumbar support and recline settings to ensure you are sitting ergonomically correct at all times. Your joints should always be comfortable at a 90 degree angle when sitting in your chair and your feet should firmly touch the floor at all times. Breathable upholstery is preferred so as to ensure your comfort and not allow your body to overheat. How your chair feels to your arms and shoulders is also very important, if you need to shrug your shoulders to rest them on the arm rests then your chair is not right for you as your arms should always be able to rest perfectly on the arm rests, or on the desk in line with your keyboard, while in a fully relaxed position.