Nike Womens ZoomX Invincible Run FK 3. Maximum cushioning to support every mile, Invincible 3 offers our highest level of underfoot comfort. Soft, bouncy ZoomX foam helps keep you stable and fresh. Features high support technology, with cushioning and stability intentionally placed and shaped to help protect your foot from the effects of pronation. Very high cushioning underfoot for a smoother and more comfortable running experience. Nike ZoomX rocker cushioning and higher foams provide a soft and bouncy feel.