Additional Details ------------------------------ Product description: Your nose is divided into 2 chambers (nostrils). At the back of each nostril is a narrow space called the nasal valve, which is only about 1/10” wide. All of the air you breathe in through the nose has to funnel through these spaces, which can become blocked for a variety of reasons. Nasal strips widen the space by mechanically pulling open the flexible cartilage walls of the nasal valves, making it easier to breathe.