Insert pads are generally for lighter incontinence. Small insert pads have adhesive strips on the back which allows the user to securely attach the pad in their own undergarments. Large insert pads are better designed to cope with heaver incontinence, and require close fitting underwear to help keep them in place.
Most brands also product a fixation pant, such as the TENA Fix, which is a stretch, seamless undergarment which sits tight to the skin and keeps the pad securely in place. Insert pads benefit from being easy to change, discreet and come in a variety of sizes and shapes to suit every body type and need.