Nike shox R4 shoes technology an attractive aspect is that it can be adjusted to the specific sport or even the specific needs of athletes among its prospects are very exciting. Connect Nike Shox R4 shoes columns above is TPU (Thermo Plastic Urethane) followed by its impact in the SHOX columns scattered on the heel, while providing support. Nike Shox R4 shoes is the use of high-density PU foam column replaced the real spring. It can absorb impact energy and transformed into kinetic energy.