A patient interface device (100) for a pressure support system that includes a fluid coupling conduit (6) and a gas flow generator (4) that produces a flow of breathing gas for a patient. The patient interface device includes: a frame member (120) secured to the patient and an adjustment assembly (110), which includes a body member (130) coupled to the frame member. The body member is fluidly coupled to the fluid coupling conduit. A dial member (160) is coupled to each of the frame member and the body member. When the frame member is under tension and oriented concavely with respect to the dial member, the adjustment assembly is structured to move between a first position and a second position. The frame member exerts a force on the dial member. When the adjustment assembly moves from the first position to the second position, the force increases.
