This device works fantastic. With sufficient air through the nose I now wake up with no headaches from lack of oxygen. I buy plenty of these to replace them every few weeks, after they wear out too much and get too weak. I use them at home, and when traveling, everyday, no exceptions. At first time use it seemed a bit painful, but after a while my nose got used to it. The strong extra-large version is definitely painful even after years of using it, but it is good to have the strong version too, since sometimes the normal version does not provide enough airflow, depending on how swollen the nose is inside, obviously depending on the diet of the day before, and how much this device needs to expand the nose. In addition to this device I recommend to watch the food you eat. Some food makes the nose inside swell up, other food creates a lot of mucous in the nose. It's just a matter of observing what you eat, and what happens to your body. Everyone is different, there is no standard list of what to eat or not to eat to keep the nose free.
