ponytailable 

An adjective used to describe a length of hair, typically at the back of one's head, that can be tied into a ponytail.

My hair is almost long enough to be ponytailable; I think it will be in a month.

ponytailable by StacyStacy October 15, 2010

Pony Tailable 

Hair that's long enought to pull back into a pony tail.

My friend Carol told my hair dresser she can cut off a decent amount of hair as long as it's still pony tailable.

Pony Tailable by bennzz61 January 21, 2011