A failure. When I first got it I was worried about the cardboard insert to control the tension to keep the back upright. It held up for three months. I finally was unable to tighten the back. In addition, the mesh created cotton balls from whatever cotton top I wear. I had to put a towel on the back to prevent this. But the cotton balls continued now coming from the towel. I have thrown the chair into my garbage bin to be picked up shortly. The end of a bad experience.