NIKE Womens Free RN Flyknit Sneaker Laser Orange/Gamma Blue/Cool Grey/Black-831070-800 (10 M US) fabric-and-synthetic Rubber sole The next-generation Nike Free midsole expands in multiple directions thanks to an entirely new tri-star pattern, adding a new dimension of flexibility that lets your feet move more dynamically with every stride. Softer than previous iterations, the new midsole foam delivers exceptionally comfortable cushioning and lightweight durability for miles. The single-seam Flyknit upper provides an incredible sock-like fit with targeted areas of high breathability, stretch and support. Flywire cables woven into the upper can be tightened through the laces for dynamic support that moves with you Non-stretch heel material for added structure