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Unisex Sigma Harmony

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Aggressive. Bold. Victorious. Meet the all-new Sigma Harmony, designed for the most demanding sprinters. Built on a new plate, this model provides a smoother and more powerful transition than its predecessor. Using BOA® Closure technology, it offers an alternative to traditional laces for customized comfort and no pressure points. A midfoot canopy and new knit heel construction hold the spike in place for PR-ready performance.


  • 8 spike configuration
  • A new, data-engineered 8-spike plate provides traction with just the right amount of flexibility.
  • Bootie construction
  • Full Length Pebax Plate
  • Knit upper
  • No sew overlays
  • Removable spikes for superior traction
  • The Boa System® features a midfoot canopy and heel wrap for a truly customizable fit
  • Women order a size and a half down

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