The X-Small fits:
Bird Diaper Washing Instructions: Turn soiled Bird Diaper inside out and match up the velcro fastner. Allow the Bird Diaper to soak in Woolite water mixture for 30-45 minutes. Rinse throughly in cold water and hang to dry.
Returns: For birds 6 months of age or older. Please note that due to hidden virus and transmittable disease that all parrots are susceptible to, opened Flight Suit Bird Diapers will not be accepted for return.