The Face Cozy (TM) is a lightweight, soft, comfortable mask liner for users of CPAP, APAP, BIPAP and Oxygen masks that is designed to fit your face, not a specific mask. It provides a comfortable barrier between the mask components and straps, and is designed to help reduce or eliminate CPAP mask strap marks, skin irritation from the mask components, and help you get the most from your treatment device. It helps prevent air leakage from your CPAP therapy mask by acting as a soft, comfortable gasket between your CPAP or oxygen mask, sort of like the gasket between a jar and and its lid. This is a non-medical solution that is designed to work with any types of masks mentioned above, and is patented and trademarked. Invented by a CPAP machine user, the Face Cozy can help you get a better night's rest. It is easy to adjust by pulling on the fabric or custom trimming with your scissors. The Face Cozy comes with two per package and is washable, uses a no-pilling 100% polyester lambskin fleece and is designed to stretch just enough but not too much. The design allows you to simply slip the ear loops over your ears so the mask stays in place, then you put on your mask and adjust the positioning of the fabric so you can sleep cozy and comfortable! Because the Face Cozy forms a protective barrier between your skin and the mask & straps, it can help you avoid skin irritation and strap marks without needing any medical solutions, ointments or creams. The Face Cozy is designed to avoid strap marks on the face as a single piece of fabric, with no seams, stitching or other features that could potentially fray and cause skin irritation from stray threads or worn stitching. It was awarded patents in the US and Canada in part because of its elegantly simple, unique, yet highly effective design.