PRODUCT INFO
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.
 
Benefits
Weight: 175 grams (6.2 oz)
Bootie construction for a custom like fit
The BOA System® features a midfoot canopy and heel wrap for the truly customizable fit
Synthetic/mesh upper
8 spike configuration
Removable spikes for superior traction