This small sized foam rubber Light baton was made for the 2010 Tron sequel ‘Tron: Legacy’
Batons of this smaller size were used by the female Programs on the Grid, like Quorra.
This baton was made in the same style as the larger ones used by the male characters, who are seen using them for bikes or planes, just in a smaller size for different purposes (for example we see Quorra use it as a sword in the End of Line club)