A protective undergarment, such as a diaper, includes a sling that is suspended from an outer shell. The sling forms a pocket in which a reusable or disposable absorbent pad can be positioned. The sling has an S-pocket or overlapping pocket at the front end and a cuff at the rear end. The cuff forms a slimmer outer profile than the S-pocket or overlapping pocket and is used only in the rear where leakage is not as significant as at the front. The S-pocket or overlapping pocket and the cuff are both suspended from bumper strips that extend from the waistband. Rectangular hook and loop fasteners and extension members allow a diaper to fit wearers of different waist size.