Abstract: A hair fastening device for use in holding a user's hair. The hair fastening device includes an elongated band having a first end and a second end. The hair fastening device includes an opening on a first end thereof into which a user can insert his or her finger in order to hold the elongated band. The elongated band includes a first surface having fasteners thereon, and a second surface having fasteners on the second end thereof. The elongated band can be disposed in a loop and secured on a user's hair by engaging the fasteners on the first and second surfaces thereof. An attachment having a foam body can be removably secured to the elongated band to facilitate securement of the user's hair. In this way, the hair fastening device allows a user to adjustably secure his or her hair in a ponytail or similar hair style.