I almost gave this product one star, until I figured out how they work… there are no instructions that come with this product. You might be saying, “why do you need instructions for earplugs?“. This is why… When you open the box, it has the cord which goes around your neck, and the 2 sets of ear plugs are separate and come in little plastic bags. There are two types, one is for full protection, and one is for partial protection. If you want to know which ones do what, just look at picture on the cover of the box. Easy enough… Now for the warning… I own a tree removal company and I am around very loud noises all day, so I bought these because I liked the idea of the attached cord to secure the earplugs so I could easily take them in and out without having to screw around with holding them or putting them in my pocket all the time when not in use. So I bought these specifically for the full protection set since I am around pretty extreme amounts of noise. When I went to put the plugs into the cord they were slipping in and out so easily that they were completely ineffective, and offered almost no sound protection. So as I was putting them back in the box to return them, I decided to try out the partial protection earplugs to see if those worked better. They did, and this is why…. What they don’t tell you, since they don’t provide instructions, is that there is another piece besides the plugs and the cord which secures the plugs to the cord and offers most of the sound protection. When you open the box, this piece has been pre-installed into the partial protection plugs, but not the full protection plugs. Once I figure this out and pulled the partial protection plugs off of this piece and installed the full protection plugs, they worked great. I love them. That being said, all of this could’ve been solved with a simple paper insert explaining this. Since the plugs are so good, I don’t want to give them anything less than five stars, so that’s why I am writing instructions on their behalf… I hope they read this review and start putting instructions in the box, otherwise they are going to get about half of their products returned if people happen to try the full protection plugs first. Perhaps they just forgot to put the instructions in my box, and that’s certainly possible, but just in case they all come like this, I hope this review helps.