Originally Posted by [cc]
They don't pinch anything, they do the opposite. They're not clips, they're more like stiff, flat bandages with adhesive on them. When you bend them and stick them on your nose, they "pull" the nostrils open slightly.
While what you described does exist (brand name Breathe Right), what the OP linked to is not that.
It is, indeed, a clip that goes on the septum. Most useful for people who snore because of a deviated septum - a septum that's flopping into the nasal passage and restricting the flow of air.
They won't work for people who snore because their mouth falls open and their soft palate falls into the airway, which is the very loud snorking snoring, often accompanied by periods of apnea (not breathing). This product works for some of the gentle nasal snorers.