Lift. Run. Move. In the Nike Free Flex, you have the freedom to choose your own workout adventure. Its all-purpose attributes unlock a wealth of training options, thanks to a flexible outsole and lightweight upper. Flexibility - Very High - The rubber outsole comes with built-in cutouts for flexibility. And there are thin slits in the forefoot for added flexibility. Cushioning - Moderate - A full-length foam midsole offers comfort and cushioning. Stability - Moderate - An elastic band around the heel supplies added support. Lightweight Support - The upper is made of mesh for lightweight, breathable, support. The mesh collar gives you soft comfort around your ankle.