It is a desirable aesthetic in ballet and other dance genres, making it seem as though a dancer effortlessly becomes airborne, floats in the air, and lands softly.
The name is widely thought to be derived from the French word ballon (meaning "balloon"), though it has been dubiously claimed that the name was inspired by French ballet danseur Claude Balon, who was known for performing exceptionally light leaps.
By raising the arms and legs while ascending and lowering them while descending, the dancer alters the apparent path of the center of mass and, in so doing, seems to observers to be momentarily floating in the air.
The dancer starts from a plié (bent knees) and then, during the ascending phase of the step, lifts each knee in succession with hips turned out, so that for a moment both feet are in the air and the dancer appears to be suspended in air.
To give the appearance of lightness when landing, the dancer pliés and rolls the foot from toe to heel.