A self-applicator for a percussor or airway clearance device has first and second straps that overlay one another and define an open area in-between. A pouch for holding the percussor is secured in the open area. Handles on the ends of the straps permit a user to easily hold the self-applicator against his/her back while using the percussor. One of the handles has an adjustable length harness to accommodate users of different sizes. An application surface on one of the straps is configured to make contact with the users back and permit the percussor to contact the users back through the strap.
