An abdominal binder is a fitted elastic material that wraps around the tummy and fastens (usually with velcro). It is meant to fit snugly, but not tightly; similar to an ace bandage for a sprained ankle. An abdominal binder serves several functions in the early post-op stages of an abdominal or pelvic surgery, including a hysterectomy. If you had a c-section or other kind of abdominal surgery, you likely had a binder to help with your abdominal support while you were recovering.
Read more about Abdominal Binder: What Is It & Do I Need One?