Newton Running shoes were designed by runners to mimic the advantages of barefoot running. They allow your foot to move naturally and efficiently through the gait cycle while providing superior energy return in every stride. Our Action/Reaction Technology™ offers the most energetic ride available anywhere. Bottom line: you’ll run smoother, more efficiently and, ultimately, faster.
 
  
http://www.newtonrunning.com/newton-products/the-shoes to read about the different models