Patent ID: 7938117

Claim:
A full face respiratory mask for providing breathable gas to a wearer, the mask comprising: a. a shell forming a chamber having an inlet and an outlet with a perimeter; b. a malleable element disposed around the entirety of the perimeter and only around said perimeter, the malleable element being formable and capable of holding the perimeter of the shell in a custom fit configuration, formed by the wearer, to produce a desired fit; c. a stiffener for at least one portion of the malleable element; and d. a seal disposed proximate the outlet, the seal dimensioned and shaped to contact the seal with external skin around two nares at a base of a nose of the wearer, wherein substantially all of the sealing occurs between the seal and the external skin; and e. wherein the custom fit configuration of the perimeter of the shell is retained after the mask is worn.