Masks are very useful in the respiratory care industry as they can be used to provide air or prescribed breathing support to patients. There are a variety of mask styles that can be fitted to the individual to provide comfort, proper fit and adequate air flow for treatment. Patients who receive non-invasive ventilation often have sleep apnea or other respiratory disorders and use CPAP or BiPAP masks. Most common types are nasal masks, nasal pillow masks and full face masks. Nasal masks covers the nose, nasal pillow masks fit snugly at the nostrils, and full-face masks cover the nose and mouth. Each is suitable for different breathing patterns, sleeping positions, comfort and medical needs. When selecting respiratory masks, you should look for a mask that fits properly, has a comfortable cushion, is adjustable, can be easily cleaned, and is compatible with your CPAP or BiPAP machine. A well-fitted mask can help to keep air from leaking and make treatment more comfortable. Talk to your health care professional or equipment maker about what kind of masks you should use for your treatment.