Abstract: An apparatus for releasably securing an opening of a garment is described. The apparatus includes a drawstring, a casing with a window, and a cord lock. The casing has an inner tunnel and encloses the opening. The drawstring runs through the tunnel of the casing. The drawstring extends out of the casing at the window. The cord lock is located at the window inside the casing for locking the drawstring from moving into the casing when the cord lock is in a locking state, and for releasing the drawstring to move freely when the cord lock is in a releasing state. As the drawstring is tightened when the cord lock is in the locking state, the cord lock is prevented from travelling with the drawstring thereby allowing the drawstring to slide through the cord lock.