The Nike Odyssey React Women's Running Shoe provides crazy comfort that lasts as long as you can run. Its Nike React foam cushioning is responsive yet lightweight, durable yet soft. This attraction of opposites creates a sensation that not only enhances the feeling of moving forwards, but makes running feel fun, too. The upper of the Nike Odyssey React is built with a lightweight, breathable fabric instead of the premium Flyknit featured on the Nike Epic React. Ridiculously Responsive Nike React feels incredibly bouncy. As your foot lands, the foam responds to the impact of your step by snapping back. The more energy you put into your step, the more energy you get in return. Compared to the similarly soft Nike Lunarlon cushioning, you get 13% more energy return with React. Feels Like the First Run Based on testing with champion runners like Galen Rupp, React cushioning still feels like new after roughly 300 miles. As the foam resists compression and keeps its shape, you get that exciting out-of-the-box experience with every run. Cool and Comfortable The upper is made with breathable Jacquard fabric, and has a more open knit on the forefoot to help release heat and keep your feet cool. Lightweight foam lines the collar for a plush, comfortable feel around your ankle. Inside the shoe, a stretchy sleeve hugs your foot from the ankle to the midfoot, giving you a locked-in fit and a comfortable, sock-like feel.