The Carder Mesh Office Chair is exactly what I wanted. I was needing a chair I could use in my home office at my desk top computer. The mesh chair back has the arch for lower back support which works great. The only disadvantage I experienced was I wanted the chair shipped directly to my address and by doing this the chair had to be assembled. It is not hard to assemble just inconvenient. For a small fee the store offered to assemble but that would have entailed another trip back to the store to pick up the chair so I opted to assemble it myself.
I love this chair. I work at the computer several hours and this chair allows me to adjust to different positions so my back and shoulders don't hurt. I like having the lumbar too.