I bought a double set from Amazon for $8.99, "Clipple Silent Snore Away Device - Magnetic Anti Snoring Nose Clip," and I have zero idea how it works, BUT IT DOES. I have been a loud snorer since at least my teens (now 70), and disturbed many a sailor in my barracks way back when. I have even driven my wife to the couch. And what I don't understand is the airflow thing, since I have a good size nose, LOL, and its' respective nostrils, so must already have gotten good airflow. I always assumed it was my soft pallet that was the cause. My wife is tickled pink, says, "I have no idea how it works, but it does." Now when relaxing out on our deck, reading on a lounge, without it, and falling asleep, I still snore sounding like a bullfrog, LOL. Trusts me, for me at least, this product is a Godsend.
Bottom Line: Yes, I would recommend this to a friend