Corde lisse is an aerial circus skill or act that involves acrobatics on a vertically hanging rope.
Corde lisse moves are normally a combination of held postures and drops using a rope that hangs from the ceiling.
The technique is closely related to both silks, (another aerial circus skill performed on one or two long strips of strong fabric, often in bright colours), and Spanish web.
Cirque du Soleil also uses corde lisse, aerial silks and trapeze in some of their shows.
On the stage there are a group of performers doing wheel down's on Corde Lisse that remind Bruce of bats, scaring him, and causing the family to leave.