Stay steady and keep progressing toward your running goals in the Flex Experience 12. Minimal with full range of motion from heel to toe, it’s made to move with every stride, pace and kick when you find your groove. Plush Upper The plush, supersoft upper hugs your foot and provides comfort. Free to Move Grooves in the outsole allow for optimal foot flexibility and help you move freely when running the gamut. Stable and Supportive Low stack heights offer an enhanced lightweight design yet still provides the stability and support you need.