Abstract: The present invention provides a garment which can have the waist size thereof adjusted quickly, and yet is a garment which can withstand (a) the strong washing and cleaning solutions and (b) the rigorous washing and cleaning procedures used by linen suppliers. That waist adjusting arrangement includes a masking band and a confining and guiding arrangement for a portion of that band. That confining and guiding arrangement is disposed at the inner face of one of the side panels of the garment; and that masking band is secured to the other of those side panels. That masking band will prevent unlimited separation of those side panels, and a portion of that masking band will overlie and conceal any fasteners which are not overlain and concealed by the one side panel whenever the garment is given its largest waist size.