Nike Lab Zoom Flyknit Streak Unisex Racing Shoe Men, Women, College Navy, Size. engineered to finish first the nikelab zoom flyknit streak unisex racing shoe delivers ultralight support & responsive cushioning to help you fly by the competition. ultralight support a flyknit upper & flywire cables provide the perfect combination of stretch, breathability & lightweight lockdown. optimal propulsion an anatomical toe shape & midfoot shank create power & 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 & comfort weight: 192g approx. (men's size 9) offset: 8mm flyknit 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 & designers to create the technology needed to make the knit upper with static properties for structure & durability. then the precise placement of support, flexibility & breathability – all in one layer – was refined. the result is a featherweight, form-fitting & virtually seamless upper.