Gray Nicolls Velocity Flexi Spike Sole Spike - Blown Rubber provides lightweight comfort and works with 9 strategically position spikes for ultimate traction. ESS torsion midfoot section in midsole provides stability. Upper - Breathable airmesh upper combined with high grade PU Support Elements  Strategically positioned PU overlays create mid-foot stability easing stress on the foot during long days in field. Rubber - Pro Zone Last. Sleek profile of a running shoe ensures modern look with closer fit and outstanding performance