The key to buying a quality brown leather office chair is to make absolutely certain that which you buy is genuine 100% leather. This is not to imply that leather can be a hybrid material. No, what we are saying is that often materials such as Naugahyde are represented as being leather when they are in fact high grade vinyl. An excellent example of this is the fabric used in Mercedes Benz cars known as MB-tex. This must be the closest leather look alike material ever made. In fact it is far more durable than real leather. But when you pay for a certain grade and expense of material in an item such as an office chair you want to make sure you receive what you paid for.
Another important tip is that very often manufacturers make the sides and backs of a brown leather office chair out of matching vinyl so as to save on expense. This is fine so long as that savings is passed on to you the consumer in the final price. Of course the whole point of buying a top grade cowhide leather chair is to buy the best product available. That rarely is a chair with plastic sides and back.