What a cool surprise that I had not noticed in the ad (I may have missed it) but a vibrating lumbar back rest!! How cool is that?  Plus I LOVE the height of the back - something I made sure I got the right thing. I hate sitting back and not having head and neck support but this back is plenty long enough and it makes the chair much more comfortable.  Wide and deep seat is a nice feature, plus all the adjustable recline positions.  Assembly was easy and it's a sleek, well made product at a great price. Highly recommend this item.  Now I'll sit back and relaxxxxx in style and comfort!!