Armrest – Some people prefer sitting with no armrest. If you do, however enjoy this signature feature look for 3D or 4D armrest. They offer more customization because they can move in more directions than 2D or fixed arrest. Also look to make sure that the armrest is detachable for when you ever want to go armless.
Lumbar Support – is a must have, but often overlooked because office chairs usually have basic lumbar support. An adjustable lumbar support system is more ideal because you can adjust it to offer the most comfort.
Seat Tilt – The controls are usually below or in front of the chair. This feature lets the sitter adjust their seat forward and backward. Tilt lock enables the sitter to lock the chair in an upright position.
Seat Dimensions -The seat height from the floor and the armrest are important measurements to know when buying a chair. The width and depth of the seat pads is a big factor for petite sitters because it makes most chairs for larger people.
Remember the 90-90-90 Rule, where you have a 90° degree angle at your knees, hips, and arms. This ergonomic posture is usually determined by the chair’s seat dimensions.
Chair Mobility – Swivel is a must. Also make sure the casters (wheels) compliment your floor. Soft casters work best on hard surfaces such as wood or a plastic chair mat. Hard casters are better on a carpet.