Sable are characterized by glossy black coats with white under parts and white facial markings. Cows and young are dark brown in color. Both sexes have stiff black manes along the dorsal aspects of their necks. The shoulder height of bulls is 1.4 m, which weigh up to 270 Kg. Cows are slightly smaller. Both sexes have long horns, which are ridged, and which curve backwards. Tips of horns are smooth and sharp pointed. The scimitar-shaped horns of mature bulls can be up to 1.2 m in length. Horns on females are shorter and slimmer. Ears are brick red at the back and shorter than that of the roan antelope. The horn of young become visible at the age of two months.