: Deep laser-cut "sipes" (grooves) in the outsole allow the foot to flex naturally in multiple directions.

: A "Free Run Mode" allows users to execute any of their power-based workouts directly from a smartphone.

: Apps like Strava , Map My Run , or the Nike Run Club use a "Free Run" feature to record basic data (GPS, pace, distance) without following a specific pre-set coaching plan or interval workout.