These really help breathing at night for folks with narrow noses. Only downside is the adhesive becomes gooey by morning and it takes a little effort to get it off.
Great product, helps me avoid the loud and costly oxygen generators. I've been using these for years and they did the trick in improving my sleep, immediately upon first use! I use these green box for day and the red box for night. The only thing to make them work best is to clean the oil from your skin with some rubbing alcohol first.