The Nike Zoom Rival M 9 for women are comfortable spikes. These renewed M 9s are versatile and specially designed for various distances. The spikes offer a lot of cushioning and a stable and supporting fit. The internal arch band comfortably wraps around the midfoot and offers a lot of stability. The overlays in the upper are highly breathable and more durable than their predecessor.The Phylon midsole is lightweight and offers a lot of cushioning. Phylon foam added to the heel provides a responsive feel. The rubber heel with its updated grip pattern offers more traction and grip. The solid Pebax plate underneath the midfoot offers a lot of support and ensures a powerful take-off.