Cheap quality but gets the job done. I've had no issues! It's plastic tubing that has a paper-like and paper-thin surface. Easily shows dust buildup, however I store it in the closet. The height can not be adjusted however, you can place fewer tubing than necessary to make height adjustments. I purchased another rack and I didn't place a shelf between different tubing joints so I could easily store my boots and have more room in between the shelves.