Fluid and reagent. NIKE odyssey react running shoes for men with improved flexibility and lightness. The neoprene shoe offers a perfect fit like a second skin and the revolutionary react cushioning is designed for a fluid and reactive ride. NIKE react cushioning for a smooth, lightweight ride Internal neoprene footbed for a smooth, tight second-skin fit. Mesh upper for optimal breathability. Technical mesh upper for breathability and lightness. Athlete-designed geometric outsole structure for even impact distribution, smooth transition and smooth feel.