My dad works in a High noise enviornment. I always use the cheap-o ones his work provides, they work nicely for me. Used them in conjuntion with ear covers for shooting, and go to conserts using them, the point is if you get em for free, they're good, but a more reusable pair might be something if you want to keep them. Though if you tend to loose things, the cheap-o ones work, and you can buy a large box of em.