Nasal pillow masks are growing in popularity because they are the smallest type of CPAP mask with the least amount of facial coverage. They only cover the base of your nostrils with soft nasal pillows and are attached to your head with headgear. They are ideal for those who only breathe through their nose at night, but they can be used by people whose mouths open at night if a chinstrap is added. Using a chinstrap keeps the mouth closed, allowing people who may breathe partially through their mouth to enjoy the minimal coverage of the nasal pillow mask. These masks should comfortably seal around the base of your nose without leaving red marks or causing irritation or soreness. They will attach to any CPAP machine with flexible tubing. The nasal pillows should be replaced when they rip or fail to provide a complete seal around your nose. To maximize the lifespan of your nasal pillow mask, wash it daily with warm water and soap or mask wipes or spray.