The Preston Ergonomic Manager chair is one of the few fully ergonomic executive chairs with a three lever mechanism offering most of the ergonomic functions of the standard typist chair.
Height-adjustable: Everyone is built differently, so the ideal office chair should be adjustable to the user’s height. As a reference, you should be seated in such a way that your thighs are horizontal to the floor. Check for a lever that can bring the seat higher or lower, as necessary.
Adjustable backrests: At the same time, you should be able to adjust your backrest so that you can position it in a way that suits whatever task you’re working on. There should be a locking mechanism that holds the backrest in place so that your back isn’t tilting backward. The backrest should also be height-adjustable.
Breathable material: A seat with a breathable material is more comfortable, especially when you’ll be sitting for long periods of time. Remember to choose padding that is neither too hard (which can be painful to sit on in the long run) nor too soft (which does not offer enough support).
Lumbar support: Good lumbar support is important to minimize strain or compression on the lumbar discs in your spine. Choose a chair with a backrest that follows the natural curve of the spine. Your lower back should be supported in a way that it is arched all the time so that you don’t slump as the day progresses.