LOCKED-IN SPEEDThe Nike Air Zoom All Out Flyknit Women's Running Shoe delivers natural comfort and flexibility with low-profile cushioning and a breathable knit upper. Flywire technology integrates with the laces to help lock down the foot without weighing you down.BenefitsFlyknit upper construction fits like a second skinMid-cut collar provides a locked-down fit3/4-length, visible Zoom Air unit for the ultimate responseAsymmetrical Flywire cables integrate with the laces for dynamic midfoot supportSegmented rubber crash rail gives you extra cushioning and flexibilityTranslucent Waffle rubber outsole offers durable, multi-surface tractionProduct DetailsCushlon foam forefoot delivers support and a springy, responsive rideFlex grooves provide natural range of motionFlyknit Origins Nike Flyknit technology was inspired by feedback from runners seeking a shoe with the snug (and virtually unnoticed) fit of a sock. Nike embarked on a four-year mission with teams of programmers, engineers and designers to create the technology needed to make the knit upper with static properties for structure and durability. Then the precise placement of support, flexibility and breathability—all in one layer—was refined. The result is a featherweight, formfitting and virtually seamless upper.