I received the Rami Naturals Anti Snoring Nose Clips in exchange for my honest unbiased opinion. These small snore relief clips come with a convenient case to hold them in when not in use. They work by being inserted into the nostrils. This somehow lessons the snoring from interfering in others sleep. it opens the passages wider allowing for more airflow rather than rattling to come through.They do not prevent snoring for me but they do lighten it making it easier to be near while sleeping. They are not the most comfortable thing I have ever used in my lifetime though the first snore relief product however I am sure they need to be gotten used to then I wont even realize they are there. I received instructions on usage in an email before they arrived. These are washable and easy to clean. There are no drugs in these and have magnetic technology to aid in passage clearing.