The Nike Air Max 90 Ultra 2.0 Flyknit PNCL Women's Shoe elevates the iconic profile with a flexible, breathable Flyknit upper and the comfortable cushioning that made it a favourite. Benefits Flyknit upper with leather overlays for flex, breathability and support Visible Max Air heel unit for lightweight cushioning Injected unit midsole for plush comfort Rubber Waffle outsole for durable traction 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 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.