Great for factory work, fit super well and work great!
I got these for my hubby to try at work.  He runs a large plasma cutter and works in a fairly loud environment.  The company provides them with disposable ear plugs, but they are not very good.  I thought would have him try these, and he really likes them!  He loves the little clip on canister so he can keep it on his key ring and not lose it and then he always has them handy when he gets to work.  He said they are extremely comfortable, do a great job of blocking the noise, but yet he is better able to hear people up close when they talk to him than the disposable ones.  In fact, he likes them so much that he told a friend at work who also now wants to buy a pair.  For some reason, his did not come with the string to attach to them so they are a bit tricky to get out of his ear as they fit so well, but that is the only drawback at all that he noted.  Overall though, I would definitely recommend these to anyone.
Rating: 5 stars