Nike Womens Free Transform Flyknit Cross Trainers (8 B(M) US, WHITE/BLACK-LASER ORANGE-TOTAL ORANGE) Mesh Super-strong, ultralight Flywire cables hug your foot for dynamic support, loosening and tightening with your foot's natural motion. Injected unit sole (IU) material for light, flexible cushioning Outrigger offers stability during side-to-side movements Outsole flex grooves enhance flexibility