Nike Women Odyssey React Flyknit 2 Sneaker/Running Shoes in Black Size 7. Runs small, recommended for size 6.5. In like new condition. The Nike Odyssey React Flyknit 2 Women's Running Shoe delivers a strategic combination of lightweight flyknit and synthetic material for support just where you need it. Underfoot, Nike React cushioning delivers a soft, springy ride for a routine that begs to be crushed.