The Fisher & Paykel Oracle™ was the first ever developed oral mask - a milestone in mask design. The Oracle™ is a great solution for mouth breathers, or patients with chronic nasal obstruction. The Oracle™ oral mask provides freedom of movement with an unobstructed field of vision for reading, watching tv and more. It is fully assembled and ready for use upon delivery. Users enjoy multiple comfort features such as adjustable headgear and easy release straps.