Stride with confidence in the Nike Structure 26. Built for runners who want that perfect balance of stability and comfort, the Structure 26 proves you don't have to choose between support and a smooth ride. With a full-length ReactX midsole and Nike's innovative midfoot support system, the Structure 26 helps keep everything moving in the right direction so you can focus on enjoying your run. Details: Upper: The plush collar and tongue work with engineered mesh to create that premium fit that moves with your foot while maintaining the support you need. Extra padding makes every step feel comfortable, while the design gives your toes room to breathe without sacrificing that secure midfoot feel. Midsole: The full-length ReactX foam delivers 13% more responsiveness than previous React technology, giving you cushioned comfort with increased energy return. Nike's midfoot support system wraps around your arch and heel to create a stable platform that promotes smooth transitions from heel to toe-off. Outsole: High-abrasion rubber in the heel provides exceptional durability where you need it most, while blown rubber in the forefoot gives you that consistent softness and ground connection that makes every stride feel natural.