This Adjustable Height Drafting Task Chair with Chrome Base was ordered for my husband's drafting table.  When it arrived, once again very quickly after ordering, I was able to unpack the pieces and put it together in just minutes.  The set and back rest are made of a type of heavy plastic and the height of the chair can be adjusted quite easily by using the release bar found under the seat.  The color that we ordered was a pale green that makes the chair look very lively and "fun."  My major complaint is that the seat of the chair is molded to fit a person who does not carry a lot of weight or is wide at that area of their body.   If one is of larger size, this is NOT the chair for them. And since the chair and my husband did not fit together, it became my drafting task chair!! Instead of a drafting chair, it is now a great kitchen counter height chair and is great when doing tasks while sitting in the kitchen!!