Therefore when purchasing your chair for the office you must take into account that it is very important that it is ergonomic, allowing it to be adjustable, have a good lumbar support, that the backrest be high enough to give rest to the back and the neck, which has a sufficiently wide seat, it is preferable to choose a custom office chairs with armrests to avoid muscle reload, and select that which is rotating.
The width or depth of the custom office chairs seat is important because it gives you the necessary distance to the table and therefore to the computer that you are using at that moment. As for lumbar support, more attention will be paid to support in the lower back area because that is where lumbar problems begin, in this sense if it is supported correctly it should not give you any problems.
An easy way to find out is to check that it does not force you to work stooped. Ergonomic custom office chairs usually include wide backs, that is, you are not interested in having a backrest in which your back protrudes. All this is or must be adjustable, basically because not everyone has the same complexion, not everyone measures the same.