A respiratory mask system comprising: a patient interface comprising: a seal and a frame, and a headgear comprising: a front strap including a yoke configured to connect to the patient interface and a pair of side arms, each side arm configured to extend from a lateral side of the yoke and across a cheek and above an ear of a user; a top strap configured in use to extend across the top of the user's head joining the pair of side arms; and a rear strap configured to extend between the pair of side arms around the rear of the user's head; the front strap including a region of increased thickness and at least one frame retaining feature (515,615), the at least one frame retaining feature (515,615) being configured to engage a corresponding headgear retaining feature on the frame, the at least one frame retaining feature (515,615) comprising a projection (515,615) on the front strap; wherein the front strap and top strap comprise a plastic core and a textile outer casing at least partially surrounding the plastic core, and the region of increased thickness comprises a pad surrounding the at least one frame retaining feature (515,615), the pad having a greater thickness than a remainder of the front strap. a patient interface comprising: a seal and a frame, and a headgear comprising: a front strap including a yoke configured to connect to the patient interface and a pair of side arms, each side arm configured to extend from a lateral side of the yoke and across a cheek and above an ear of a user; a top strap configured in use to extend across the top of the user's head joining the pair of side arms; and a rear strap configured to extend between the pair of side arms around the rear of the user's head; the front strap including a region of increased thickness and at least one frame retaining feature (515,615), the at least one frame retaining feature (515,615) being configured to engage a corresponding headgear retaining feature on the frame, the at least one frame retaining feature (515,615) comprising a projection (515,615) on the front strap; wherein the front strap and top strap comprise a plastic core and a textile outer casing at least partially surrounding the plastic core, and the region of increased thickness comprises a pad surrounding the at least one frame retaining feature (515,615), the pad having a greater thickness than a remainder of the front strap. a front strap including a yoke configured to connect to the patient interface and a pair of side arms, each side arm configured to extend from a lateral side of the yoke and across a cheek and above an ear of a user; a top strap configured in use to extend across the top of the user's head joining the pair of side arms; and a rear strap configured to extend between the pair of side arms around the rear of the user's head; the front strap including a region of increased thickness and at least one frame retaining feature (515,615), the at least one frame retaining feature (515,615) being configured to engage a corresponding headgear retaining feature on the frame, the at least one frame retaining feature (515,615) comprising a projection (515,615) on the front strap; wherein the front strap and top strap comprise a plastic core and a textile outer casing at least partially surrounding the plastic core, and the region of increased thickness comprises a pad surrounding the at least one frame retaining feature (515,615), the pad having a greater thickness than a remainder of the front strap.