Amazing running shoe! Loved these shoes just needed something with more cushion for marathon training. Very light weight. Springy and sprightly, this lightweight running shoe keeps you going on everyday runs with an updated fit that offers more room in the forefoot and toes. Integrated Flywire cables link the laces to the footbed for dynamic, adaptive comfort, while a fusion of React foam and Zoom Air technology puts superior cushioning underfoot from the shock-absorbing heel to the diamond-tread toe. 1 1/2" heel (size 8.5) Cushioning: absorbs impact and distributes weight for consistent, buoyant comfort under each step Energy return: transforms every heel strike into responsive, explosive forward movement Flywire cables integrate with the laces for secure, flexible lockdown at the midfoot Removable, cushioned insole allows for custom orthotics Zoom Air cushioned sole energizes every stride Nike React foam sole turns every step into springy returned energy Synthetic and textile upper and lining/rubber sole