The fur of adults is mostly light colored, with darker fur on the back and limbs, and the face, ears, hands and feet are all black. Infants are brown. Body size excluding tail ranges from 45.1 cm to 78.4 cm long, and the tail length is between 80.3 cm and 111.8 cm. Adult males weigh between 16.9 kg and 19.5 kg while adult females weigh between 9.5 kg and 16.1 kg.