ENGINEERED TO FINISH FIRSTThe Nike Zoom Flyknit Streak Unisex Racing Shoe delivers ultralight support and responsive cushioning to help you fly by the competition.Ultralight SupportA Flyknit upper and Flywire cables provide the perfect combination of stretch, breathability and lightweight lockdown.Optimal PropulsionAn anatomical toe shape and midfoot shank create power and propulsion where you need it most.Responsive Cushioning A Nike Zoom Air unit in the heel delivers highly responsive cushioning with every stride.More Details Compression-moulded Phylon foam for lightweight cushioning and comfortWeight: 192 grams approx. (men's size 9)Offset: 8mmFlyknit Origins Nike Flyknit technology was inspired by feedback from runners craving 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.