The breathable Flyknit upper includes an elastic inner sleeve for a comfortable fit, and an independent upper lace eyelet to wrap the foot. In the forefoot and heel outsole, separate areas are filled with tiny TPE beads, which shrink and expand with each step, providing adaptive custom cushioning. Tiny foam beads are strategically placed in four pockets under your feet to compress and adapt to every step of your foot, absorbing impact and maintaining stability. Flyknit is an ultra-lightweight, breathable material that grips your feet and provides a sense of security. Tiny foam beads compress and adapt to your every step, resulting in a dynamic, stable feel.