A crepe bandage that measures 10cm in width and 4 meters in length is a type of elastic bandage that is commonly used to provide support and compression to injured or weak body parts such as ankles, knees, wrists, and elbows. Crepe bandages are made of a stretchy, woven material that allows them to conform to the shape of the body and provide a secure fit. They are often used to treat sprains, strains, and other minor injuries by reducing swelling and providing stability to the affected area.