XERO Shoes - Speed Force II - Running & Speed-Training ShoeProduct Description This is the holy grail of barefoot performance training. I feel fast, light, and stronger than ever in the gym, on the track, and everywhere else. Leonard M. SPEED FORCE II Speed and Power with Barefoot Feel If youre looking for the closest thing to a true barefoot experience, look no further than the Speed Force II a stylish upgrade to our original Speed Force. Steven Sashen, our CEO, Co Founder, and Masters All American sprinter