The Invincible is Nike's biggest pile of ZoomX foam for everyday running. The midsole is wide and tall, the drop is 9 mm, and the whole shoe exists to take impact out of easy miles. It suits high-mileage weeks and the recovery runs between hard sessions, where soft and protective beats sharp and fast.
It is soft enough to be unsteady. On a cambered road or through a tight corner the foam moves under you, and at roughly 309 g it is not light.
It is not a workout shoe and not a racer. Treat it as the cushioned end of a rotation and keep a firmer trainer for the days you want to feel the ground.