Patent ID: 6851428

Claim:
A size-adjustable respiratory mask, comprising: a plurality of accordian folds formed in an upper portion of the mask; a button or snap associated with the accordian folds; and a band defining one or more openings for receiving the button or snap and extending generally along a length of the mask, wherein said accordian folds have an open position and a folded position and are held in their folded positions when the button or snap is received within one of the openings in the band, wherein the accordian folds allow shortening of a length of the mask, wherein the mask can be made smaller to better conform to the facial dimensions of a patient by folding the accordian folds into folded positions that cause the mask to have a smaller length than when the accordian folds are in their open positions, and wherein folding the accordian folds results in substantially linear contraction of the upper portion of the mask.