The Nike Zoom Pegasus All Out Flyknit Running Shoe looks different because it is engineered with clever, cutting-edge features that will enable runners to rise to their potential. One-piece Flyknit constructed upper with integrated Flywire technology for a contoured, adaptive fit. Midsole pairs plush foam with a responsive Zoom Air unit in the heel. Flex grooves cut into the midsole for multi-directional forefoot flexibility. Flyknit upper construction offers strategic stretch, support and breathability. Waffle pistons help absorb impact and provide multi-surface traction.