How big do lion's manes grow?

All male lions have the Mane. The mane is nothing but a growth of hair around the neck area of the lion. The hair is similar to the hair we have on our heads. The size and darkness of the Mane signifies how mature and old the Male Lion is. Lions with a larger mane have a greater chance of holding onto a pride and also mating with lionesses. Female lions don't have any Manes. Females don't usually fight with one another so they don't have manes. The mane is very useful for male lions in their fights. During fights, lions usually try to go for the throat of their enemies. If the manes were not there, they could fatally injure one another easily. Though lions get badly or sometimes even fatally injured during fights, the mane prevents most of those fatal injuries.