A swing seat for a swing includes a seat shell and a reel movable between first and second axial positions relative to the seat shell. The reel is configured to be attached to a line, and when the reel is in the first axial position, rotation of the reel in one direction is prevented. When the reel is in the second axial position, the reel is capable of rotating in both directions. When rotating in the second rotational direction, the reel takes up the line, and when rotating in the first rotational direction, the reel extends the line. A release is used to move the reel from the first axial position to the second axial position.