This chair is great for a no-frills basic office chair. The lumbar support isn't adjustable but back rest/arm rest/seat height back and seat angle are all adjustable. The only downside to my product is that the top of the back rest was cracked upon receipt and I didn't notice it until a few weeks after already having used it.
I had a similar chair for many years. I especially like the seat and back tilt options that can be locked in place. One can modify the chair to retain a comfortable position. If you are using the chair on a hardwood floor I would suggest using rubber type caster wheels rather than the plastic wheels that come with the chair. They tend to scratch floors. The softer wheels are also much quieter.I like the product and would recommend it.