Reigning freefly world champions, Grégory Crozier and Karine Joly trained this week in the wind tunnel at La Villette, Paris. The two Frenchmen meticulously rehearsed their moves.

https://www.lequipe.fr/Adrenaline/Tous-sports/Actualites/Freefly-gregory-crozier-et-karine-joly-le-duo-peaufine-son-show-dans-la-soufflerie/1245257