I've used this for about half a year. I disinfect it every time I use it, so there are no noticeable stains. It hasn't worn out, so you can still use it for a long time. It's recommended for those who experience shoulder pain during bench press, those who are small in stature, and those with narrow shoulders. It makes it easier to bring your shoulder blades together, prevents your shoulder joints from moving forward, and helps you target your pectoral muscles.