Medical respiratory apparatus for use in non-invasive ventilation for use in the treatment of sleep disordered breathing, namely, medical respiratory masks for the delivery of respiratory therapy; full face masks for use with medical respiratory equipment; medical respiratory nasal masks comprising nasal prongs, nasal cannulae, nasal pillows, and nasal seals; medical respiratory nose and mouth masks, all for use with medical respiratory apparatus and parts therefore; textile headgear specially adapted for use with medical ventilator mask interfaces; cushions for medical respiratory masks