Presentation with the feet entering the birth canal ahead of any other part of the body. This may occur with two feet (double footling) or a single foot (single footling). Most often one leg is extended while the other is flexed at the knee. It is usually safer to deliver this kind of baby by a Cesarean section early in labor or before labor begins rather than vaginally. If a footling breech is delivered vaginally, there is a risk that the head may not easily through the birth canal.