An interface for use in providing positive pressure respiratory therapy, the interface comprising: a mask assembly comprising a mask seal and a mask base , the mask assembly configured to be fully positioned lower than a bridge of a nose of a face of a user and the mask assembly configured to provide an exposed tip of the nose of the user; the mask base comprising a central portion and a pair of wings sweeping rearwardly of the central portion , an opening for a connector being formed on the mask base in the central portion ; the mask seal being connected to the mask base , the mask seal comprising at least one oral opening on a lower portion and at least one nasal opening on an upper portion, the at least one oral opening being positioned opposite of the opening for the connector and the at least one nasal opening being positioned between the opening for the connector and the oral opening in a front to back direction; and the mask seal comprising a first paddle and a second paddle , an upper support surface being positioned between the first paddle and the second paddle such that an upwardly-open valley is defined by the first paddle , the upper support surface and the second paddle , at least a portion of the at least one nasal opening being positioned on the upper support surface within the valley ; wherein the mask seal further comprises a thickened section being coupled to the mask base , a deformation region extending across at least a portion of the width of the mask seal , the deformation region protruding outwardly from the thickened section , a laterally extending reinforcing band positioned above the deformation region , and a transition region that extends above and along the deformation region , the transition region having a varying thickness that increases from the deformation region towards the reinforcing band . a mask assembly comprising a mask seal and a mask base , the mask assembly configured to be fully positioned lower than a bridge of a nose of a face of a user and the mask assembly configured to provide an exposed tip of the nose of the user; the mask base comprising a central portion and a pair of wings sweeping rearwardly of the central portion , an opening for a connector being formed on the mask base in the central portion ; the mask seal being connected to the mask base , the mask seal comprising at least one oral opening on a lower portion and at least one nasal opening on an upper portion, the at least one oral opening being positioned opposite of the opening for the connector and the at least one nasal opening being positioned between the opening for the connector and the oral opening in a front to back direction; and the mask seal comprising a first paddle and a second paddle , an upper support surface being positioned between the first paddle and the second paddle such that an upwardly-open valley is defined by the first paddle , the upper support surface and the second paddle , at least a portion of the at least one nasal opening being positioned on the upper support surface within the valley ; wherein the mask seal further comprises a thickened section being coupled to the mask base , a deformation region extending across at least a portion of the width of the mask seal , the deformation region protruding outwardly from the thickened section , a laterally extending reinforcing band positioned above the deformation region , and a transition region that extends above and along the deformation region , the transition region having a varying thickness that increases from the deformation region towards the reinforcing band . <EOS>