Sharing the device isn't recommended. Once you put your mouth on the device and blow through it, you can put others at risk through the sharing and spreading of germs. While AirPhysio can easily be cleaned, it's highly recommended that everyone have their own device. Since AirPhysio can also be used by people of all ages, you can take advantage of our buy more save more deals going on right now – great for gifting to friends or family members.